{"id":"CVE-2026-106458","state":"PUBLISHED","title":"Backstage: Inconsistent repository filtering in Bitbucket Server catalog event updates","description":"Backstage is an open framework for building developer portals. From 0.4.0 until 0.5.15, the @backstage/plugin-catalog-backend-module-bitbucket-server package is affected by inconsistent repository filtering in bitbucket server catalog event updates. Deployments using event-driven updates in the Bitbucket Server catalog provider may ingest catalog locations from repositories that are excluded by the provider's configured project, repository, or archived-repository filters. An authenticated Bitbucket Server user who can push to a filtered-out repository that remains readable by the configured Backstage integration can trigger a legitimate repository event. The affected event path may then add a Location for that repository even though scheduled discovery excludes it. This issue is fixed in version 0.5.15.","publishedAt":"2026-10-06T20:16:12.035Z","updatedAt":"2026-10-07T17:07:16.596Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["backstage backstage","@backstage plugin-catalog-backend-module-bitbucket-server"],"affected":[{"vendor":"backstage","product":"backstage","versions":[{"version":">= 1.38.0, < 1.55.0","status":"affected"}]},{"vendor":"@backstage","product":"plugin-catalog-backend-module-bitbucket-server","versions":[{"version":">= 0.4.0, < 0.5.15","status":"affected"}]}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-c36c-cf6r-ghgj","https://github.com/backstage/backstage/commit/989db63b6f87c8fc04d440f296ad89e10c79b363","https://github.com/backstage/backstage/releases/tag/v1.55.0"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/106xxx/CVE-2026-106458.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-106458","state":"PUBLISHED","datePublished":"2026-10-06T20:16:12.035Z","dateUpdated":"2026-10-07T17:07:16.596Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-06T16:49:40.591Z"},"containers":{"cna":{"title":"Backstage: Inconsistent repository filtering in Bitbucket Server catalog event updates","descriptions":[{"lang":"en","value":"Backstage is an open framework for building developer portals. From 0.4.0 until 0.5.15, the @backstage/plugin-catalog-backend-module-bitbucket-server package is affected by inconsistent repository filtering in bitbucket server catalog event updates. Deployments using event-driven updates in the Bitbucket Server catalog provider may ingest catalog locations from repositories that are excluded by the provider's configured project, repository, or archived-repository filters. An authenticated Bitbucket Server user who can push to a filtered-out repository that remains readable by the configured Backstage integration can trigger a legitimate repository event. The affected event path may then add a Location for that repository even though scheduled discovery excludes it. This issue is fixed in version 0.5.15."}],"affected":[{"vendor":"backstage","product":"backstage","versions":[{"version":">= 1.38.0, < 1.55.0","status":"affected"}]},{"vendor":"@backstage","product":"plugin-catalog-backend-module-bitbucket-server","versions":[{"version":">= 0.4.0, < 0.5.15","status":"affected"}]}],"references":[{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-c36c-cf6r-ghgj","name":"https://github.com/backstage/backstage/security/advisories/GHSA-c36c-cf6r-ghgj","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/backstage/backstage/commit/989db63b6f87c8fc04d440f296ad89e10c79b363","name":"https://github.com/backstage/backstage/commit/989db63b6f87c8fc04d440f296ad89e10c79b363","tags":["x_refsource_MISC"]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.55.0","name":"https://github.com/backstage/backstage/releases/tag/v1.55.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-06T20:16:12.035Z"},"source":{"advisory":"GHSA-c36c-cf6r-ghgj","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T15:27:14.886311Z","id":"CVE-2026-106458","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-07T17:07:16.596Z"}}]}}}