{"id":"CVE-2026-106504","state":"PUBLISHED","title":"Backstage: Sensitive information exposure in scaffolder task logs","description":"Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder task logs. An authenticated user who can create and read scaffolder tasks may be able to observe sensitive values in task logs in deployments with restrictive action permissions and affected templates. Exploitation requires a denied action whose input contains such a value. This issue is fixed in version 4.1.0.","publishedAt":"2026-10-06T21:40:15.510Z","updatedAt":"2026-10-07T16:20:53.466Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["backstage backstage","@backstage plugin-scaffolder-backend"],"affected":[{"vendor":"backstage","product":"backstage","versions":[{"version":"< 1.54.6","status":"affected"}]},{"vendor":"@backstage","product":"plugin-scaffolder-backend","versions":[{"version":"< 4.1.0","status":"affected"}]}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-4xvq-3m68-h444","https://github.com/backstage/backstage/commit/3eb3dc59eb0da0deccd532f19eb460bb452c9efb","https://github.com/backstage/backstage/releases/tag/v1.54.6"],"weaknesses":["CWE-532"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/106xxx/CVE-2026-106504.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-106504","state":"PUBLISHED","datePublished":"2026-10-06T21:40:15.510Z","dateUpdated":"2026-10-07T16:20:53.466Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-06T18:46:47.766Z"},"containers":{"cna":{"title":"Backstage: Sensitive information exposure in scaffolder task logs","descriptions":[{"lang":"en","value":"Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder task logs. An authenticated user who can create and read scaffolder tasks may be able to observe sensitive values in task logs in deployments with restrictive action permissions and affected templates. Exploitation requires a denied action whose input contains such a value. This issue is fixed in version 4.1.0."}],"affected":[{"vendor":"backstage","product":"backstage","versions":[{"version":"< 1.54.6","status":"affected"}]},{"vendor":"@backstage","product":"plugin-scaffolder-backend","versions":[{"version":"< 4.1.0","status":"affected"}]}],"references":[{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-4xvq-3m68-h444","name":"https://github.com/backstage/backstage/security/advisories/GHSA-4xvq-3m68-h444","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/backstage/backstage/commit/3eb3dc59eb0da0deccd532f19eb460bb452c9efb","name":"https://github.com/backstage/backstage/commit/3eb3dc59eb0da0deccd532f19eb460bb452c9efb","tags":["x_refsource_MISC"]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","name":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-532","lang":"en","description":"CWE-532: Insertion of Sensitive Information into Log File","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-06T21:40:15.510Z"},"source":{"advisory":"GHSA-4xvq-3m68-h444","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T16:20:37.738464Z","id":"CVE-2026-106504","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":"2026-10-07T16:20:53.466Z"}}]}}}