{"api_version":"1","generated_at":"2026-10-07T00:03:19+00:00","cve":"CVE-2026-106499","urls":{"html":"https://cve.report/CVE-2026-106499","api":"https://cve.report/api/cve/CVE-2026-106499.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-106499","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106499"},"summary":{"title":"Backstage: Secret-derived values may be exposed 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 could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. 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Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-532","description":"CWE-532: Insertion of Sensitive Information into Log File","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-06T21:25:56.166Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg"},{"name":"https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70"},{"name":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6"}],"source":{"advisory":"GHSA-mfvq-x7vr-rgqg","discovery":"UNKNOWN"},"title":"Backstage: Secret-derived values may be exposed in scaffolder task logs"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-106499","datePublished":"2026-10-06T21:25:56.166Z","dateReserved":"2026-10-06T18:46:47.766Z","dateUpdated":"2026-10-06T21:25:56.166Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 22:17:04","lastModifiedDate":"2026-10-06 22:17:04","problem_types":["CWE-532","CWE-532 CWE-532: Insertion of Sensitive Information into Log File"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","baseScore":4.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1.2,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"106499","Ordinal":"1","Title":"Backstage: Secret-derived values may be exposed in scaffolder ta","CVE":"CVE-2026-106499","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"106499","Ordinal":"1","NoteData":"Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0.","Type":"Description","Title":"Backstage: Secret-derived values may be exposed in scaffolder ta"}]}}}