{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-106500", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-06T18:46:47.766Z", "datePublished": "2026-10-06T21:29:10.626Z", "dateUpdated": "2026-10-07T15:48:01.118Z"}, "containers": {"cna": {"title": "Backstage: Improper task state validation in Scaffolder backend", "problemTypes": [{"descriptions": [{"cweId": "CWE-59", "lang": "en", "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-362", "lang": "en", "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/backstage/backstage/security/advisories/GHSA-xvgh-hmx8-9xxf", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/backstage/backstage/security/advisories/GHSA-xvgh-hmx8-9xxf"}, {"name": "https://github.com/backstage/backstage/commit/0d24f1b8701f3dde6cd597f81997c1ea873a43ae", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/commit/0d24f1b8701f3dde6cd597f81997c1ea873a43ae"}, {"name": "https://github.com/backstage/backstage/commit/56be299dd3ef6706e13e76ea2f8a9b0dd0b6413d", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/commit/56be299dd3ef6706e13e76ea2f8a9b0dd0b6413d"}, {"name": "https://github.com/backstage/backstage/commit/9e86c95a1a3ddfd54db03731cd8678aa63495175", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/commit/9e86c95a1a3ddfd54db03731cd8678aa63495175"}, {"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/v1.50.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/backstage/backstage/releases/tag/v1.50.5"}, {"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, < 1.50.5", "status": "affected"}, {"version": ">= 1.51.0-next.0, < 1.54.6", "status": "affected"}]}, {"vendor": "@backstage", "product": "plugin-scaffolder-backend", "versions": [{"version": "< 3.3.1", "status": "affected"}, {"version": ">= 3.4.0, < 3.4.1", "status": "affected"}, {"version": ">= 4.0.0, < 4.0.3", "status": "affected"}, {"version": ">= 4.0.4, < 4.1.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-06T21:29:10.626Z"}, "descriptions": [{"lang": "en", "value": "Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper task state validation in scaffolder backend. An authenticated user with permission to create and access Scaffolder tasks may, under specific timing and deployment conditions, affect files accessible to the Backstage backend. If backend application files are writable, the confidentiality, integrity, and availability of the backend may be compromised. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0."}], "source": {"advisory": "GHSA-xvgh-hmx8-9xxf", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-07T15:47:41.478403Z", "id": "CVE-2026-106500", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-07T15:48:01.118Z"}}]}}

{}

{"affected": [{"affectedData": [{"product": "backstage", "vendor": "backstage", "versions": [{"status": "affected", "version": "< 1.49.6"}, {"status": "affected", "version": ">= 1.50.0-next.0, < 1.50.5"}, {"status": "affected", "version": ">= 1.51.0-next.0, < 1.54.6"}]}, {"product": "plugin-scaffolder-backend", "vendor": "@backstage", "versions": [{"status": "affected", "version": "< 3.3.1"}, {"status": "affected", "version": ">= 3.4.0, < 3.4.1"}, {"status": "affected", "version": ">= 4.0.0, < 4.0.3"}, {"status": "affected", "version": ">= 4.0.4, < 4.1.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper task state validation in scaffolder backend. An authenticated user with permission to create and access Scaffolder tasks may, under specific timing and deployment conditions, affect files accessible to the Backstage backend. If backend application files are writable, the confidentiality, integrity, and availability of the backend may be compromised. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0."}], "id": "CVE-2026-106500", "lastModified": "2026-10-07T16:17:39.567", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-106500", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-07T15:47:41.478403Z", "version": "2.0.3"}}]}, "published": "2026-10-06T22:17:05.060", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/backstage/backstage/commit/0d24f1b8701f3dde6cd597f81997c1ea873a43ae"}, {"source": "security-advisories@github.com", "url": "https://github.com/backstage/backstage/commit/56be299dd3ef6706e13e76ea2f8a9b0dd0b6413d"}, {"source": "security-advisories@github.com", "url": "https://github.com/backstage/backstage/commit/9e86c95a1a3ddfd54db03731cd8678aa63495175"}, {"source": "security-advisories@github.com", "url": "https://github.com/backstage/backstage/releases/tag/v1.49.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/backstage/backstage/releases/tag/v1.50.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/backstage/backstage/releases/tag/v1.54.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/backstage/backstage/security/advisories/GHSA-xvgh-hmx8-9xxf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-362"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "@backstage/plugin-scaffolder-backend: @backstage/plugin-scaffolder-backend: Unauthorized file manipulation via improper task state validation", "id": "2547216", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547216"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N", "status": "draft"}, "cwe": "CWE-367", "details": ["A flaw was found in @backstage/plugin-scaffolder-backend. Due to improper task state validation, an authenticated user with permissions to create and access Scaffolder tasks can affect files accessible to the Backstage backend under specific timing and deployment conditions. If the backend application files are writable, this issue can compromise the confidentiality, integrity, and availability of the backend environment."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-106500", "package_state": [{"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": "2026-10-06T21:29:10Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-106500\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-106500\nhttps://github.com/backstage/backstage/commit/0d24f1b8701f3dde6cd597f81997c1ea873a43ae\nhttps://github.com/backstage/backstage/commit/56be299dd3ef6706e13e76ea2f8a9b0dd0b6413d\nhttps://github.com/backstage/backstage/commit/9e86c95a1a3ddfd54db03731cd8678aa63495175\nhttps://github.com/backstage/backstage/releases/tag/v1.49.6\nhttps://github.com/backstage/backstage/releases/tag/v1.50.5\nhttps://github.com/backstage/backstage/releases/tag/v1.54.6\nhttps://github.com/backstage/backstage/security/advisories/GHSA-xvgh-hmx8-9xxf"], "statement": "This vulnerability is rated as Important severity because authenticated remote users with rights to run software templates can alter files within the backend service environment, posing a risk to data integrity and system confidentiality. While the flaw requires valid user credentials and specific Scaffolder permissions rather than being exploitable by unauthenticated attackers, the potential ability to manipulate host or container files elevates the severity above Moderate. In typical Red Hat Developer Hub and Ansible Automation Platform deployments, the affected component operates within containerized environments, which restricts the blast radius to writable mounts while preventing direct host operating system compromise.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.49.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.50.0-next.0,1.50.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.51.0-next.0,1.54.6)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "backstage", "source": "cna", "vendor": "backstage"}, "product": "backstage", "vendor": "backstage"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.3.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.4.0,3.4.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.0,4.0.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.4,4.1.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "plugin-scaffolder-backend", "source": "cna", "vendor": "@backstage"}, "product": "plugin-scaffolder-backend", "vendor": "backstage"}], "created": "2026-10-06T23:30:08.283516+00:00", "updated": "2026-10-07T13:45:06.740543+00:00", "vendors": ["backstage", "backstage$PRODUCT$backstage", "backstage$PRODUCT$plugin-scaffolder-backend"], "weaknesses": ["CWE-362", "CWE-367", "CWE-59"]}