{"api_version":"1","generated_at":"2026-10-06T23:29:23+00:00","cve":"CVE-2026-106459","urls":{"html":"https://cve.report/CVE-2026-106459","api":"https://cve.report/api/cve/CVE-2026-106459.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-106459","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106459"},"summary":{"title":"Backstage: Improper input validation in Sentry scaffolder actions","description":"Backstage is an open framework for building developer portals. From 0.3.0 until 0.3.8, the @backstage/plugin-scaffolder-backend-module-sentry package is affected by improper input validation in sentry scaffolder actions. An authenticated internal user who can execute the affected actions may cause the backend to contact unintended destinations and disclose Sentry integration credentials. Subsequent impact depends on network reachability and the privileges granted to the configured token. This issue is fixed in version 0.3.8.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-10-06 21:17:16","updated_at":"2026-10-06 21:17:16"},"problem_types":["CWE-200","CWE-918","CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","CWE-918 CWE-918: Server-Side Request Forgery (SSRF)"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"8.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","baseScore":8.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://github.com/backstage/backstage/releases/tag/v1.55.0","name":"https://github.com/backstage/backstage/releases/tag/v1.55.0","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/backstage/backstage/commit/b0170fad7962fb8c3d71366b5265cf283c7bbcf7","name":"https://github.com/backstage/backstage/commit/b0170fad7962fb8c3d71366b5265cf283c7bbcf7","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.8","name":"https://github.com/backstage/backstage/releases/tag/v1.54.8","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-g734-fhp4-7mfp","name":"https://github.com/backstage/backstage/security/advisories/GHSA-g734-fhp4-7mfp","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-106459","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106459","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"backstage","product":"backstage","version":"affected >= 1.47.0, < 1.54.8","platforms":[]},{"source":"CNA","vendor":"@backstage","product":"plugin-scaffolder-backend-module-sentry","version":"affected >= 0.3.0, < 0.3.8","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"backstage","vendor":"backstage","versions":[{"status":"affected","version":">= 1.47.0, < 1.54.8"}]},{"product":"plugin-scaffolder-backend-module-sentry","vendor":"@backstage","versions":[{"status":"affected","version":">= 0.3.0, < 0.3.8"}]}],"descriptions":[{"lang":"en","value":"Backstage is an open framework for building developer portals. From 0.3.0 until 0.3.8, the @backstage/plugin-scaffolder-backend-module-sentry package is affected by improper input validation in sentry scaffolder actions. An authenticated internal user who can execute the affected actions may cause the backend to contact unintended destinations and disclose Sentry integration credentials. Subsequent impact depends on network reachability and the privileges granted to the configured token. This issue is fixed in version 0.3.8."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-06T20:19:37.541Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/backstage/backstage/security/advisories/GHSA-g734-fhp4-7mfp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/backstage/backstage/security/advisories/GHSA-g734-fhp4-7mfp"},{"name":"https://github.com/backstage/backstage/commit/b0170fad7962fb8c3d71366b5265cf283c7bbcf7","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/commit/b0170fad7962fb8c3d71366b5265cf283c7bbcf7"},{"name":"https://github.com/backstage/backstage/releases/tag/v1.54.8","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/releases/tag/v1.54.8"},{"name":"https://github.com/backstage/backstage/releases/tag/v1.55.0","tags":["x_refsource_MISC"],"url":"https://github.com/backstage/backstage/releases/tag/v1.55.0"}],"source":{"advisory":"GHSA-g734-fhp4-7mfp","discovery":"UNKNOWN"},"title":"Backstage: Improper input validation in Sentry scaffolder actions"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-106459","datePublished":"2026-10-06T20:19:37.541Z","dateReserved":"2026-10-06T16:49:40.591Z","dateUpdated":"2026-10-06T20:19:37.541Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 21:17:16","lastModifiedDate":"2026-10-06 21:17:16","problem_types":["CWE-200","CWE-918","CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","CWE-918 CWE-918: Server-Side Request Forgery (SSRF)"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","baseScore":8.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.1,"impactScore":4.7}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"106459","Ordinal":"1","Title":"Backstage: Improper input validation in Sentry scaffolder action","CVE":"CVE-2026-106459","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"106459","Ordinal":"1","NoteData":"Backstage is an open framework for building developer portals. From 0.3.0 until 0.3.8, the @backstage/plugin-scaffolder-backend-module-sentry package is affected by improper input validation in sentry scaffolder actions. An authenticated internal user who can execute the affected actions may cause the backend to contact unintended destinations and disclose Sentry integration credentials. Subsequent impact depends on network reachability and the privileges granted to the configured token. This issue is fixed in version 0.3.8.","Type":"Description","Title":"Backstage: Improper input validation in Sentry scaffolder action"}]}}}