{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-39923", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-04-07T20:57:06.210Z", "datePublished": "2026-08-05T14:38:35.604Z", "dateUpdated": "2026-08-05T14:38:35.604Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-05T14:38:35.604Z"}, "title": "Flarum < 1.8.16 Password Reset Token Expiry Bypass via POST /reset", "descriptions": [{"lang": "en", "value": "Flarum before 1.8.16 contains a password reset token expiry bypass vulnerability that allows unauthenticated attackers to reuse expired password reset tokens by submitting them directly to the reset processing endpoint. The SavePasswordController::handle() method calls PasswordToken::findOrFail() without performing any expiry validation, allowing attackers to bypass the 24-hour token lifetime enforced only during form rendering and change any account's password to gain an authenticated session."}], "tags": ["x_open-source"], "datePublic": "2026-04-11T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-324", "description": "Use of a Key Past its Expiration Date", "type": "CWE"}]}], "affected": [{"defaultStatus": "affected", "vendor": "Flarum", "product": "Flarum Framework", "packageURL": "pkg:github/flarum/framework", "repo": "https://github.com/flarum/framework", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThan": "1.8.16"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "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": "CRITICAL", "baseScore": 9.2, "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "HIGH", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}}], "references": [{"url": "https://github.com/flarum/framework/releases/tag/v1.8.16", "name": "Release Notes", "tags": ["release-notes"]}, {"url": "https://github.com/flarum/framework/pull/4545", "name": "Pull Request", "tags": ["issue-tracking"]}, {"url": "https://github.com/flarum/framework/commit/2803058d0f9dc38252326070b46d4484fe5a857d", "name": "Patch Commit", "tags": ["patch"]}, {"url": "https://www.vulncheck.com/advisories/flarum-password-reset-token-expiry-bypass-via-post-reset", "tags": ["third-party-advisory"]}], "credits": [{"lang": "en", "value": "Hamed Kohi", "type": "finder"}, {"lang": "en", "value": "VulnCheck", "type": "coordinator"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "vulncheck"}}}}

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{"created": "2026-08-05T16:30:13.000737+00:00", "updated": "2026-08-05T16:30:13.000743+00:00", "vendors": []}