GET

Vulnerability Instance

Lookup for vulnerabilities affecting packages.

GET /api/vulnerabilities/54393?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/54393?format=api",
    "vulnerability_id": "VCID-93dy-76qc-8fb7",
    "summary": "Insufficient Session Expiration\nAuthentication.logout() helper in com.vaadin:flow-client versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 through 6.0.4 (Vaadin 19.0.0 through 19.0.3) uses incorrect HTTP method, which, in combination with Spring Security CSRF protection, allows local attackers to access Fusion endpoints after the user attempted to log out.",
    "aliases": [
        {
            "alias": "CVE-2021-31408"
        },
        {
            "alias": "GHSA-mr8h-j9cv-4m8h"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80431?format=api",
            "purl": "pkg:maven/com.vaadin/flow@6.0.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-2fz6-rucr-xqax"
                },
                {
                    "vulnerability": "VCID-bud2-81n2-wyhc"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow@6.0.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80403?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@6.0.5",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@6.0.5"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80421?format=api",
            "purl": "pkg:maven/com.vaadin/vaadin-bom@19.0.4",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-4r96-z5zh-cubc"
                },
                {
                    "vulnerability": "VCID-9fku-daga-ebgv"
                },
                {
                    "vulnerability": "VCID-hemz-191r-fyej"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/vaadin-bom@19.0.4"
        }
    ],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80483?format=api",
            "purl": "pkg:maven/com.vaadin/flow@5.0.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-2fz6-rucr-xqax"
                },
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
                {
                    "vulnerability": "VCID-bud2-81n2-wyhc"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow@5.0.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302604?format=api",
            "purl": "pkg:maven/com.vaadin/flow@5.0.1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-2fz6-rucr-xqax"
                },
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
                {
                    "vulnerability": "VCID-bud2-81n2-wyhc"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow@5.0.1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302605?format=api",
            "purl": "pkg:maven/com.vaadin/flow@5.0.2",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-2fz6-rucr-xqax"
                },
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
                {
                    "vulnerability": "VCID-bud2-81n2-wyhc"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow@5.0.2"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302606?format=api",
            "purl": "pkg:maven/com.vaadin/flow@5.0.3",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-2fz6-rucr-xqax"
                },
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
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                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow@5.0.3"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80432?format=api",
            "purl": "pkg:maven/com.vaadin/flow@5.0.4",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
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                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow@5.0.4"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80402?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@5.0.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
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                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@5.0.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302486?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@5.0.1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
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                },
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                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@5.0.1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302487?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@5.0.2",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
                {
                    "vulnerability": "VCID-rz3g-vj4c-yyex"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@5.0.2"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302488?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@5.0.3",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
                {
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                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@5.0.3"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302489?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@5.0.4",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
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                {
                    "vulnerability": "VCID-rz3g-vj4c-yyex"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@5.0.4"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80515?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@6.0.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                },
                {
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                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@6.0.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302490?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@6.0.1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
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            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@6.0.1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302491?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@6.0.2",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
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                    "vulnerability": "VCID-93dy-76qc-8fb7"
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            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@6.0.2"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/302492?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@6.0.3",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
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                {
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            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/flow-client@6.0.3"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80516?format=api",
            "purl": "pkg:maven/com.vaadin/flow-client@6.0.4",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
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        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80376?format=api",
            "purl": "pkg:maven/com.vaadin/vaadin-bom@18.0.0",
            "is_vulnerable": true,
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        },
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            "url": "http://public2.vulnerablecode.io/api/packages/302249?format=api",
            "purl": "pkg:maven/com.vaadin/vaadin-bom@18.0.1",
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        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/80429?format=api",
            "purl": "pkg:maven/com.vaadin/vaadin-server@18.0.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-93dy-76qc-8fb7"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/com.vaadin/vaadin-server@18.0.0"
        }
    ],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-31408",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00048",
                    "scoring_system": "epss",
                    "scoring_elements": "0.15139",
                    "published_at": "2026-06-04T12:55:00Z"
                },
                {
                    "value": "0.00048",
                    "scoring_system": "epss",
                    "scoring_elements": "0.15215",
                    "published_at": "2026-06-06T12:55:00Z"
                },
                {
                    "value": "0.00048",
                    "scoring_system": "epss",
                    "scoring_elements": "0.15225",
                    "published_at": "2026-06-05T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-31408"
        },
        {
            "reference_url": "https://github.com/vaadin/flow/pull/10577",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.3",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
                },
                {
                    "value": "MODERATE",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://github.com/vaadin/flow/pull/10577"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31408",
            "reference_id": "CVE-2021-31408",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.3",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
                },
                {
                    "value": "MODERATE",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31408"
        },
        {
            "reference_url": "https://vaadin.com/security/cve-2021-31408",
            "reference_id": "CVE-2021-31408",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.3",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
                },
                {
                    "value": "MODERATE",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://vaadin.com/security/cve-2021-31408"
        },
        {
            "reference_url": "https://github.com/advisories/GHSA-mr8h-j9cv-4m8h",
            "reference_id": "GHSA-mr8h-j9cv-4m8h",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/advisories/GHSA-mr8h-j9cv-4m8h"
        },
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            "reference_id": "GHSA-mr8h-j9cv-4m8h",
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                },
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                }
            ],
            "url": "https://github.com/vaadin/platform/security/advisories/GHSA-mr8h-j9cv-4m8h"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 1035,
            "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities",
            "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017."
        },
        {
            "cwe_id": 352,
            "name": "Cross-Site Request Forgery (CSRF)",
            "description": "The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request."
        },
        {
            "cwe_id": 613,
            "name": "Insufficient Session Expiration",
            "description": "According to WASC, Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."
        },
        {
            "cwe_id": 937,
            "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities",
            "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013."
        },
        {
            "cwe_id": 287,
            "name": "Improper Authentication",
            "description": "When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct."
        }
    ],
    "exploits": [],
    "severity_range_score": "4.0 - 6.9",
    "exploitability": "0.5",
    "weighted_severity": "6.2",
    "risk_score": 3.1,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-93dy-76qc-8fb7"
}