{"url":"http://public2.vulnerablecode.io/api/packages/229555?format=json","purl":"pkg:npm/ckeditor5@10.1.0","type":"npm","namespace":"","name":"ckeditor5","version":"10.1.0","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"47.6.0","latest_non_vulnerable_version":"47.6.0","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/16436?format=json","vulnerability_id":"VCID-6q1k-xwcb-53hm","summary":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\nCKSource CKEditor5 35.4.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the Full Featured CKEditor5 widget.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2022-48110","reference_id":"","reference_type":"","scores":[{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79456","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79428","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79529","published_at":"2026-04-26T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79523","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79492","published_at":"2026-04-21T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.7949","published_at":"2026-04-16T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79459","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.7947","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79487","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79545","published_at":"2026-04-29T12:55:00Z"},{"value":"0.01266","scoring_system":"epss","scoring_elements":"0.79465","published_at":"2026-04-09T12:55:00Z"},{"value":"0.0296","scoring_system":"epss","scoring_elements":"0.86446","published_at":"2026-04-04T12:55:00Z"},{"value":"0.0296","scoring_system":"epss","scoring_elements":"0.86427","published_at":"2026-04-02T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-48110"},{"reference_url":"https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"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/2025-03-24T12:58:12Z/"}],"url":"https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html"},{"reference_url":"https://github.com/ckeditor/ckeditor5","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/ckeditor/ckeditor5"},{"reference_url":"https://packetstormsecurity.com/files/170927/CKSource-CKEditor5-35.4.0-Cross-Site-Scripting.html","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"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/2025-03-24T12:58:12Z/"}],"url":"https://packetstormsecurity.com/files/170927/CKSource-CKEditor5-35.4.0-Cross-Site-Scripting.html"},{"reference_url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/php/webapps/51260.txt","reference_id":"CVE-2022-48110","reference_type":"exploit","scores":[],"url":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/php/webapps/51260.txt"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48110","reference_id":"CVE-2022-48110","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48110"},{"reference_url":"https://github.com/advisories/GHSA-6p89-3p7c-qrhv","reference_id":"GHSA-6p89-3p7c-qrhv","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-6p89-3p7c-qrhv"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/55861?format=json","purl":"pkg:npm/ckeditor5@36.0.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-dc1k-hva1-pkbs"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/ckeditor5@36.0.0"}],"aliases":["CVE-2022-48110","GHSA-6p89-3p7c-qrhv"],"risk_score":10.0,"exploitability":"2.0","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-6q1k-xwcb-53hm"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/36269?format=json","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/229580?format=json","purl":"pkg:npm/ckeditor5@25.0.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-6q1k-xwcb-53hm"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/ckeditor5@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"}],"fixing_vulnerabilities":[],"risk_score":"10.0","resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/ckeditor5@10.1.0"}