{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-106492", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-06T18:46:47.766Z", "datePublished": "2026-10-06T20:48:05.896Z", "dateUpdated": "2026-10-06T20:48:05.896Z"}, "containers": {"cna": {"title": "Backstage: Improper preservation of access restrictions during service credential delegation", "problemTypes": [{"descriptions": [{"cweId": "CWE-269", "lang": "en", "description": "CWE-269: Improper Privilege Management", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v"}, {"name": "https://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124"}, {"name": "https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33"}, {"name": "https://github.com/backstage/backstage/releases/tag/v1.49.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/releases/tag/v1.49.6"}, {"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"}], "affected": [{"vendor": "backstage", "product": "backstage", "versions": [{"version": "< 1.49.6", "status": "affected"}, {"version": ">= 1.50.0-next.0, < 1.54.6", "status": "affected"}]}, {"vendor": "@backstage", "product": "backend-defaults", "versions": [{"version": "< 0.16.1", "status": "affected"}, {"version": ">= 0.17.0, < 0.17.8", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-06T20:48:05.896Z"}, "descriptions": [{"lang": "en", "value": "Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions (e.g., read-only) could bypass those restrictions by routing requests through plugin delegation paths. This could allow a restricted service to perform operations beyond its intended scope, including write operations on plugins it was restricted to read-only access for. This issue is fixed in versions 0.16.1 and 0.17.8."}], "source": {"advisory": "GHSA-cq7v-rfgc-5c7v", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "backstage", "vendor": "backstage", "versions": [{"status": "affected", "version": "< 1.49.6"}, {"status": "affected", "version": ">= 1.50.0-next.0, < 1.54.6"}]}, {"product": "backend-defaults", "vendor": "@backstage", "versions": [{"status": "affected", "version": "< 0.16.1"}, {"status": "affected", "version": ">= 0.17.0, < 0.17.8"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions (e.g., read-only) could bypass those restrictions by routing requests through plugin delegation paths. This could allow a restricted service to perform operations beyond its intended scope, including write operations on plugins it was restricted to read-only access for. This issue is fixed in versions 0.16.1 and 0.17.8."}], "id": "CVE-2026-106492", "lastModified": "2026-10-07T13:58:29.527", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.7, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-10-06T21:17:18.220", "references": [{"source": "[email protected]", "url": "https://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124"}, {"source": "[email protected]", "url": "https://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33"}, {"source": "[email protected]", "url": "https://github.com/backstage/backstage/releases/tag/v1.49.6"}, {"source": "[email protected]", "url": "https://github.com/backstage/backstage/releases/tag/v1.54.6"}, {"source": "[email protected]", "url": "https://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-863"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "@backstage/backend-defaults: @backstage/backend-defaults: Access control bypass via improper service credential delegation", "id": "2547199", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547199"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L", "status": "draft"}, "cwe": "CWE-281", "details": ["A flaw was found in @backstage/backend-defaults. The package fails to properly preserve access restrictions during service credential delegation when requests are routed through plugin delegation paths. An authenticated service with limited privileges can exploit this issue to bypass access controls and perform unauthorized operations, such as modifying data on restricted plugins."], "name": "CVE-2026-106492", "package_state": [{"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Affected", "package_name": "rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Affected", "package_name": "rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Affected", "package_name": "rhdh/rhdh-hub-rhel9", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Affected", "package_name": "ansible-automation-platform/automation-portal", "product_name": "Self-service automation portal 2"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Affected", "package_name": "ansible-automation-platform/bootc-automation-portal-rhel9", "product_name": "Self-service automation portal 2"}], "public_date": "2026-10-06T20:48:05Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-106492\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-106492\nhttps://github.com/backstage/backstage/commit/40346245c53e1bf26dee56601e95c5c4ab9cc124\nhttps://github.com/backstage/backstage/commit/bc80ffdafbc92ff7b8c72347eace13cb8688fd33\nhttps://github.com/backstage/backstage/releases/tag/v1.49.6\nhttps://github.com/backstage/backstage/releases/tag/v1.54.6\nhttps://github.com/backstage/backstage/security/advisories/GHSA-cq7v-rfgc-5c7v"], "threat_severity": "Important"}

{"created": "2026-10-07T00:15:07.174831+00:00", "updated": "2026-10-07T13:45:06.741057+00:00", "vendors": []}