CVE-2026-106509

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This issue is fixed in versions 1.14.6 and 1.15.4."}], "id": "CVE-2026-106509", "lastModified": "2026-10-09T17:34:17.120", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.3, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-106509", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-07T18:01:39.138438Z", "version": "2.0.3"}}]}, "published": "2026-10-06T22:17:06.463", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Patch"], "url": "https://github.com/backstage/backstage/commit/02cd7cdbb18b687446277b5602adaee7f1d53cbb"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Patch"], "url": "https://github.com/backstage/backstage/commit/a900a9953c8f7ad3ba1906d1d257725a9996cc9d"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/backstage/backstage/releases/tag/v1.50.5"}, {"source": "security-advisories@github.com", "tags": ["Release Notes"], "url": "https://github.com/backstage/backstage/releases/tag/v1.54.6"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory", "Mitigation"], "url": "https://github.com/backstage/backstage/security/advisories/GHSA-8w7q-29mw-gf5c"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}, {"lang": "en", "value": "CWE-1336"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "plugin-techdocs-node: Backstage plugin-techdocs-node: Arbitrary code execution via improper MkDocs configuration validation", "id": "2547235", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547235"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L", "status": "draft"}, "cwe": "CWE-94", "details": ["Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs theme configuration in techdocs. When TechDocs is configured to build documentation locally or in a container, a user with write access to a registered repository can include configuration values in mkdocs.yml that cause arbitrary code execution during the documentation build process. This issue is fixed in versions 1.14.6 and 1.15.4.", "A flaw was found in the Backstage plugin-techdocs-node package. When TechDocs is configured to build documentation locally or within a container, an authenticated user with write access to a registered repository can submit malicious configuration values within the MkDocs theme settings. This flaw allows an attacker to achieve arbitrary code execution during the documentation build process."], "name": "CVE-2026-106509", "package_state": [{"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Under investigation", "package_name": "rhdh/rhdh-hub-rhel9", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Under investigation", "package_name": "ansible-automation-platform/automation-portal", "product_name": "Self-service automation portal 2"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Under investigation", "package_name": "ansible-automation-platform/bootc-automation-portal-rhel9", "product_name": "Self-service automation portal 2"}], "public_date": "2026-10-06T21:50:07Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-106509\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-106509\nhttps://github.com/backstage/backstage/commit/02cd7cdbb18b687446277b5602adaee7f1d53cbb\nhttps://github.com/backstage/backstage/commit/a900a9953c8f7ad3ba1906d1d257725a9996cc9d\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-8w7q-29mw-gf5c"], "threat_severity": "Important"}

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