{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-123806","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-11-06T15:27:56.226Z","datePublished":"2026-11-09T20:18:45.481Z","dateUpdated":"2026-11-13T13:09:54.700Z"},"containers":{"cna":{"title":"python-tuf: Platform-dependent delegation path matching","problemTypes":[{"descriptions":[{"cweId":"CWE-178","lang":"en","description":"CWE-178: Improper Handling of Case Sensitivity","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/theupdateframework/python-tuf/security/advisories/GHSA-qp9x-wp8f-qgjj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/theupdateframework/python-tuf/security/advisories/GHSA-qp9x-wp8f-qgjj"},{"name":"https://github.com/theupdateframework/python-tuf/commit/8ed4414946041030b264871ac41b929cf15774a5","tags":["x_refsource_MISC"],"url":"https://github.com/theupdateframework/python-tuf/commit/8ed4414946041030b264871ac41b929cf15774a5"},{"name":"https://github.com/theupdateframework/python-tuf/releases/tag/v7.0.0","tags":["x_refsource_MISC"],"url":"https://github.com/theupdateframework/python-tuf/releases/tag/v7.0.0"}],"affected":[{"vendor":"theupdateframework","product":"python-tuf","versions":[{"version":"< 7.0.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-09T20:18:45.481Z"},"descriptions":[{"lang":"en","value":"python-tuf is a Python reference implementation of The Update Framework (TUF). Prior to 7.0.0, DelegatedRole._is_target_in_pathpattern in tuf/api/_payload.py uses fnmatch.fnmatch, which applies os.path.normcase before matching and makes delegation path authorization case-insensitive on Windows. When a TUF repository has path-based delegations that differ only by case and an attacker-controlled role is visited before the legitimate role, ngclient can accept an attacker-provided target from the wrong delegation for a requested path. Linux and macOS clients are not affected because their path normalization does not change case. This issue is fixed in 7.0.0."}],"source":{"advisory":"GHSA-qp9x-wp8f-qgjj","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-13T13:09:37.342304Z","id":"CVE-2026-123806","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-13T13:09:54.700Z"}}]}}