Lookup for vulnerable packages by Package URL.

GET /api/packages/228547?format=api
HTTP 200 OK
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Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/packages/228547?format=api",
    "purl": "pkg:npm/%40ckeditor/ckeditor5-markdown-gfm@10.0.0",
    "type": "npm",
    "namespace": "@ckeditor",
    "name": "ckeditor5-markdown-gfm",
    "version": "10.0.0",
    "qualifiers": {},
    "subpath": "",
    "is_vulnerable": true,
    "next_non_vulnerable_version": "35.0.1",
    "latest_non_vulnerable_version": "35.0.1",
    "affected_by_vulnerabilities": [
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/36269?format=api",
            "vulnerability_id": "VCID-r4vp-zkkv-jfex",
            "summary": "CKEditor 5 Markdown plugin Regular expression Denial of Service\n### Impact\nA regular expression denial of service (ReDoS) vulnerability has been discovered in the CKEditor 5 Markdown plugin code. The vulnerability allowed to abuse a link recognition regular expression, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 Markdown plugin at version <= 24.0.0. \n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 25.0.0.\n\n### Workarounds\nThe user can work around the issue by:\n- Upgrading CKEditor 5 to version 25.0.0.\n- Disabling the Markdown plugin.\n\n### More information\nIf you have any questions or comments about this advisory:\n* Email us at [security@cksource.com](mailto:security@cksource.com)\n\n### Acknowledgements\nThe CKEditor 5 team would like to thank Erik Krogh Kristensen from the GitHub team for recognizing this vulnerability and \nAlvaro Muñoz from GitHub for reporting it.",
            "references": [
                {
                    "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-21254",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61054",
                            "published_at": "2026-04-29T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61017",
                            "published_at": "2026-04-04T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.60982",
                            "published_at": "2026-04-07T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.6103",
                            "published_at": "2026-04-08T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61046",
                            "published_at": "2026-04-09T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61067",
                            "published_at": "2026-04-11T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61053",
                            "published_at": "2026-04-12T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61033",
                            "published_at": "2026-04-13T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61074",
                            "published_at": "2026-04-16T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.6108",
                            "published_at": "2026-04-18T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61063",
                            "published_at": "2026-04-21T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.6105",
                            "published_at": "2026-04-24T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.61062",
                            "published_at": "2026-04-26T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.60911",
                            "published_at": "2026-04-01T12:55:00Z"
                        },
                        {
                            "value": "0.00405",
                            "scoring_system": "epss",
                            "scoring_elements": "0.60988",
                            "published_at": "2026-04-02T12:55:00Z"
                        }
                    ],
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-21254"
                },
                {
                    "reference_url": "https://github.com/ckeditor/ckeditor5",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "6.5",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/ckeditor/ckeditor5"
                },
                {
                    "reference_url": "https://github.com/ckeditor/ckeditor5/releases/tag/v25.0.0",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "6.5",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v25.0.0"
                },
                {
                    "reference_url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-hgmg-hhc8-g5wr",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "6.5",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "cvssv3.1_qr",
                            "scoring_elements": ""
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-hgmg-hhc8-g5wr"
                },
                {
                    "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21254",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "6.5",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21254"
                },
                {
                    "reference_url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "6.5",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm"
                },
                {
                    "reference_url": "https://github.com/advisories/GHSA-hgmg-hhc8-g5wr",
                    "reference_id": "GHSA-hgmg-hhc8-g5wr",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "MODERATE",
                            "scoring_system": "cvssv3.1_qr",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/advisories/GHSA-hgmg-hhc8-g5wr"
                }
            ],
            "fixed_packages": [
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/74344?format=api",
                    "purl": "pkg:npm/%40ckeditor/ckeditor5-markdown-gfm@25.0.0",
                    "is_vulnerable": true,
                    "affected_by_vulnerabilities": [
                        {
                            "vulnerability": "VCID-wpgs-aj5v-zbbw"
                        },
                        {
                            "vulnerability": "VCID-y831-gekf-cqh6"
                        }
                    ],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/%2540ckeditor/ckeditor5-markdown-gfm@25.0.0"
                }
            ],
            "aliases": [
                "CVE-2021-21254",
                "GHSA-hgmg-hhc8-g5wr"
            ],
            "risk_score": 3.1,
            "exploitability": "0.5",
            "weighted_severity": "6.2",
            "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-r4vp-zkkv-jfex"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/53151?format=api",
            "vulnerability_id": "VCID-wpgs-aj5v-zbbw",
            "summary": "CKEditor5 cross-site scripting vulnerability caused by the editor instance destroying process\n### Affected packages\n@ckeditor/ckeditor5-markdown-gfm\n@ckeditor/ckeditor5-html-support\n@ckeditor/ckeditor5-html-embed\n\n### Impact\nA cross-site scripting vulnerability has been discovered affecting three optional CKEditor 5's packages. The vulnerability allowed to trigger a JavaScript code after fulfilling special conditions:\n\na) Using one of the affected packages. In case of `ckeditor5-html-support` and `ckeditor5-html-embed`, additionally, it was required to use a configuration that allows unsafe markup inside the editor,\nb) Initializing the editor on an element and using an element other than `<textarea>` as a base,\nc) Destroying the editor instance.\n\nThe root cause of the issue was a mechanism responsible for updating the source element with the markup coming from the CKEditor 5 data pipeline after destroying the editor. \n\nThis vulnerability might affect a small percent of integrators that depend on dynamic editor initialization/destroy and use [Markdown](https://ckeditor.com/docs/ckeditor5/latest/features/markdown.html), [General HTML Support](https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html) or [HTML embed](https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html) features.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 35.0.1.\n\n### For more information\nEmail us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.",
            "references": [
                {
                    "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2022-31175",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73078",
                            "published_at": "2026-04-11T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73134",
                            "published_at": "2026-04-24T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73097",
                            "published_at": "2026-04-21T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73103",
                            "published_at": "2026-04-18T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73094",
                            "published_at": "2026-04-16T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73007",
                            "published_at": "2026-04-02T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73051",
                            "published_at": "2026-04-13T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73028",
                            "published_at": "2026-04-04T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73003",
                            "published_at": "2026-04-07T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.7304",
                            "published_at": "2026-04-08T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73053",
                            "published_at": "2026-04-09T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73057",
                            "published_at": "2026-04-12T12:55:00Z"
                        },
                        {
                            "value": "0.00746",
                            "scoring_system": "epss",
                            "scoring_elements": "0.73147",
                            "published_at": "2026-04-29T12:55:00Z"
                        }
                    ],
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2022-31175"
                },
                {
                    "reference_url": "https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "5.8",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        },
                        {
                            "value": "Track",
                            "scoring_system": "ssvc",
                            "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-23T14:02:28Z/"
                        }
                    ],
                    "url": "https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html"
                },
                {
                    "reference_url": "https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "5.8",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        },
                        {
                            "value": "Track",
                            "scoring_system": "ssvc",
                            "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-23T14:02:28Z/"
                        }
                    ],
                    "url": "https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html"
                },
                {
                    "reference_url": "https://ckeditor.com/docs/ckeditor5/latest/features/markdown.html",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "5.8",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        },
                        {
                            "value": "Track",
                            "scoring_system": "ssvc",
                            "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-23T14:02:28Z/"
                        }
                    ],
                    "url": "https://ckeditor.com/docs/ckeditor5/latest/features/markdown.html"
                },
                {
                    "reference_url": "https://github.com/ckeditor/ckeditor5",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "5.8",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/ckeditor/ckeditor5"
                },
                {
                    "reference_url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-42wq-rch8-6f6j",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "5.8",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "cvssv3.1_qr",
                            "scoring_elements": ""
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        },
                        {
                            "value": "Track",
                            "scoring_system": "ssvc",
                            "scoring_elements": "SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-04-23T14:02:28Z/"
                        }
                    ],
                    "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-42wq-rch8-6f6j"
                },
                {
                    "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2022-31175",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "5.8",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L"
                        },
                        {
                            "value": "MODERATE",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-31175"
                },
                {
                    "reference_url": "https://github.com/advisories/GHSA-42wq-rch8-6f6j",
                    "reference_id": "GHSA-42wq-rch8-6f6j",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "MODERATE",
                            "scoring_system": "cvssv3.1_qr",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/advisories/GHSA-42wq-rch8-6f6j"
                }
            ],
            "fixed_packages": [
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/80812?format=api",
                    "purl": "pkg:npm/%40ckeditor/ckeditor5-markdown-gfm@35.0.1",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:npm/%2540ckeditor/ckeditor5-markdown-gfm@35.0.1"
                }
            ],
            "aliases": [
                "CVE-2022-31175",
                "GHSA-42wq-rch8-6f6j"
            ],
            "risk_score": 3.1,
            "exploitability": "0.5",
            "weighted_severity": "6.2",
            "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-wpgs-aj5v-zbbw"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/34859?format=api",
            "vulnerability_id": "VCID-y831-gekf-cqh6",
            "summary": "Regular expression Denial of Service in multiple packages\n### Impact\nA regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 27.0.0.\n\n### For more information\nEmail us at security@cksource.com if you have any questions or comments about this advisory.\n\n### Acknowledgements\nThe CKEditor 5 team would like to thank Yeting Li for recognizing and reporting these vulnerabilities.",
            "references": [
                {
                    "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-21391",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "0.08303",
                            "scoring_system": "epss",
                            "scoring_elements": "0.92226",
                            "published_at": "2026-04-01T12:55:00Z"
                        },
                        {
                            "value": "0.08303",
                            "scoring_system": "epss",
                            "scoring_elements": "0.92273",
                            "published_at": "2026-04-29T12:55:00Z"
                        },
                        {
                            "value": "0.08303",
                            "scoring_system": "epss",
                            "scoring_elements": "0.92278",
                            "published_at": "2026-04-26T12:55:00Z"
                        },
                        {
                            "value": "0.08303",
                            "scoring_system": "epss",
                            "scoring_elements": "0.92277",
                            "published_at": "2026-04-24T12:55:00Z"
                        },
                        {
                            "value": "0.08303",
                            "scoring_system": "epss",
                            "scoring_elements": "0.92241",
                            "published_at": "2026-04-07T12:55:00Z"
                        },
                        {
                            "value": "0.08303",
                            "scoring_system": "epss",
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