{"id":"CVE-2026-100541","state":"PUBLISHED","title":"OpenClaw Matrix before 2026.8.1 Authorization Bypass via Case Folding","description":"OpenClaw's Matrix integration (npm package @openclaw/matrix) versions >= 2026.2.2 and < 2026.8.1 lowercase complete Matrix user IDs — including historical localparts and the case-sensitive server-name portion — when deriving the OpenClaw authorization identity. As a result, distinct authenticated Matrix accounts can normalize to the same authorization identity. A Matrix participant controlling a colliding account identifier (a protocol-valid identifier that differs from the configured one only by characters OpenClaw case/Unicode folds; display-name matching is not required) can inherit allowlist, owner-command, exec-approval, or plugin-approval authority configured for another account. The issue is fixed in 2026.8.1.","publishedAt":"2026-09-26T02:18:39.224Z","updatedAt":"2026-10-08T15:21:45.988Z","severity":{"score":7.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["openclaw matrix"],"affected":[{"vendor":"openclaw","product":"matrix","packageURL":"pkg:npm/%40openclaw/matrix","defaultStatus":"unaffected","versions":[{"version":"2026.2.2","status":"affected","lessThan":"2026.8.1","versionType":"semver"},{"version":"2026.8.1","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/openclaw/openclaw/security/advisories/GHSA-hgv5-f2r3-6v9r","https://www.vulncheck.com/advisories/openclaw-matrix-before-2026.8.1-authorization-bypass-via-case-folding"],"weaknesses":["CWE-178"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/100xxx/CVE-2026-100541.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100541","state":"PUBLISHED","datePublished":"2026-09-26T02:18:39.224Z","dateUpdated":"2026-10-08T15:21:45.988Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-26T01:01:36.095Z"},"containers":{"cna":{"title":"OpenClaw Matrix before 2026.8.1 Authorization Bypass via Case Folding","descriptions":[{"lang":"en","value":"OpenClaw's Matrix integration (npm package @openclaw/matrix) versions >= 2026.2.2 and < 2026.8.1 lowercase complete Matrix user IDs — including historical localparts and the case-sensitive server-name portion — when deriving the OpenClaw authorization identity. As a result, distinct authenticated Matrix accounts can normalize to the same authorization identity. A Matrix participant controlling a colliding account identifier (a protocol-valid identifier that differs from the configured one only by characters OpenClaw case/Unicode folds; display-name matching is not required) can inherit allowlist, owner-command, exec-approval, or plugin-approval authority configured for another account. The issue is fixed in 2026.8.1."}],"affected":[{"vendor":"openclaw","product":"matrix","packageURL":"pkg:npm/%40openclaw/matrix","defaultStatus":"unaffected","versions":[{"version":"2026.2.2","status":"affected","lessThan":"2026.8.1","versionType":"semver"},{"version":"2026.8.1","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-hgv5-f2r3-6v9r","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-hgv5-f2r3-6v9r)"},{"url":"https://www.vulncheck.com/advisories/openclaw-matrix-before-2026.8.1-authorization-bypass-via-case-folding","name":"VulnCheck Advisory: OpenClaw Matrix before 2026.8.1 Authorization Bypass via Case Folding","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-178","lang":"en","description":"Improper Handling of Case Sensitivity","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-08T15:21:45.988Z"},"datePublic":"2026-09-11T00:00:00.000Z","x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-29T17:33:31.392368Z","id":"CVE-2026-100541","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-29T17:36:09.707Z"}}]}}}