{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58273","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-29T21:54:30.332Z","datePublished":"2026-11-05T21:56:20.677Z","dateUpdated":"2026-11-06T17:38:26.076Z"},"containers":{"cna":{"title":"Rucio: Authorisation Bypass on REST API endpoint for signing URLs","problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/rucio/rucio/security/advisories/GHSA-5j9r-fx4x-rpvg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rucio/rucio/security/advisories/GHSA-5j9r-fx4x-rpvg"},{"name":"https://github.com/rucio/rucio/commit/64c0e6a6a93ae88427ff3b7d77532ce08c8a69ec","tags":["x_refsource_MISC"],"url":"https://github.com/rucio/rucio/commit/64c0e6a6a93ae88427ff3b7d77532ce08c8a69ec"},{"name":"https://github.com/rucio/rucio/commit/8bdc38994a8766658d0314d36afc104c9242c96f","tags":["x_refsource_MISC"],"url":"https://github.com/rucio/rucio/commit/8bdc38994a8766658d0314d36afc104c9242c96f"},{"name":"https://github.com/rucio/rucio/commit/8d9ba31514e6f5dca32b8c1db4738582cb37ec3a","tags":["x_refsource_MISC"],"url":"https://github.com/rucio/rucio/commit/8d9ba31514e6f5dca32b8c1db4738582cb37ec3a"},{"name":"https://github.com/rucio/rucio/releases/tag/35.9.0","tags":["x_refsource_MISC"],"url":"https://github.com/rucio/rucio/releases/tag/35.9.0"},{"name":"https://github.com/rucio/rucio/releases/tag/38.6.0","tags":["x_refsource_MISC"],"url":"https://github.com/rucio/rucio/releases/tag/38.6.0"},{"name":"https://github.com/rucio/rucio/releases/tag/41.0.0rc1","tags":["x_refsource_MISC"],"url":"https://github.com/rucio/rucio/releases/tag/41.0.0rc1"}],"affected":[{"vendor":"rucio","product":"rucio","versions":[{"version":">= 1.16.1, < 35.9.0","status":"affected"},{"version":">= 36.0.0, < 38.6.0","status":"affected"},{"version":">= 39.0.0, < 41.0.0rc1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-05T21:56:20.677Z"},"descriptions":[{"lang":"en","value":"Rucio is a scientific data management framework. From 1.16.1 until 35.9.0, 38.6.0, and 41.0.0rc1, the /credentials/signurl endpoint reads X-Rucio-Account instead of the account stored in request.environ['issuer'] by token authentication. Any authenticated low-privilege user can supply root as the header value and pass the root-only get_signed_url permission check. The server then returns a presigned read, write, or delete URL for an attacker-selected object using stored S3, GCS, or Swift credentials, and X-Rucio-VO can select another tenant in multi-VO deployments. This permits data disclosure, modification, deletion, and cross-tenant access on cloud-backed RSEs. This issue is fixed in versions 35.9.0, 38.6.0, and 41.0.0rc1."}],"source":{"advisory":"GHSA-5j9r-fx4x-rpvg","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/rucio/rucio/security/advisories/GHSA-5j9r-fx4x-rpvg","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-06T17:38:03.672519Z","id":"CVE-2026-58273","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-06T17:38:26.076Z"}}]}}