{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-57997", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-06-26T17:58:05.796Z", "datePublished": "2026-06-29T21:16:35.174Z", "dateUpdated": "2026-06-29T21:16:35.174Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-06-29T21:16:35.174Z"}, "title": "Strapi users-permissions - JWT Algorithm Confusion via Missing Algorithm Configuration", "datePublic": "2026-02-06T22:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-327", "description": "CWE-327 Use of a Broken or Risky Cryptographic Algorithm", "type": "CWE"}]}], "affected": [{"vendor": "strapi", "product": "strapi", "versions": [{"status": "affected", "version": "0", "lessThan": "5.7.0", "versionType": "semver"}], "defaultStatus": "unaffected", "packageURL": "pkg:npm/strapi"}], "cpeApplicability": [{"nodes": [{"operator": "OR", "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:strapi:strapi:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "*"}]}]}], "descriptions": [{"lang": "en", "value": "Strapi users-permissions plugin fails to restrict JWT algorithms when plugin::users-permissions.jwt.algorithm is not explicitly configured, allowing acceptance of HS384 and HS512 tokens alongside HS256. Attackers possessing the jwtSecret can mint tokens with non-standard HMAC variants to bypass algorithm restrictions and weaken authentication controls.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Strapi users-permissions plugin fails to restrict JWT algorithms when plugin::users-permissions.jwt.algorithm is not explicitly configured, allowing acceptance of HS384 and HS512 tokens alongside HS256. Attackers possessing the jwtSecret can mint tokens with non-standard HMAC variants to bypass algorithm restrictions and weaken authentication controls.</p>"}]}], "references": [{"url": "https://github.com/strapi/strapi/issues/26587", "name": "https://github.com/strapi/strapi/issues/26587", "tags": ["issue-tracking"]}, {"url": "https://github.com/strapi/strapi/pull/26752", "name": "https://github.com/strapi/strapi/pull/26752", "tags": ["patch"]}, {"url": "https://github.com/strapi/strapi", "name": "https://github.com/strapi/strapi", "tags": ["product"]}, {"url": "https://www.vulncheck.com/advisories/strapi-users-permissions-jwt-algorithm-confusion-via-missing-algorithm-configuration", "tags": ["third-party-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6.3, "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 4.8, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"}}], "credits": [{"lang": "en", "value": "BL4CK570RM", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{"created": "2026-06-29T22:30:05.222030+00:00", "updated": "2026-06-29T22:30:05.222044+00:00", "vendors": []}