CVE-2026-106498

{"id": "CVE-2026-106498", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-106498", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-09T01:54:51.540668Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "backstage", "product": "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, < 1.51.3"}, {"status": "affected", "version": ">= 1.52.0-next.0, < 1.53.2"}, {"status": "affected", "version": ">= 1.54.0-next.0, < 1.54.6"}]}, {"vendor": "@backstage", "product": "plugin-catalog-backend", "versions": [{"status": "affected", "version": "< 3.5.1"}, {"status": "affected", "version": ">= 3.6.0, < 3.6.2"}, {"status": "affected", "version": ">= 3.7.0, < 3.7.2"}, {"status": "affected", "version": ">= 3.8.0, < 3.8.2"}, {"status": "affected", "version": ">= 3.9.0, < 3.9.1"}]}]}], "published": "2026-10-06T22:17:04.713", "references": [{"url": "https://github.com/backstage/backstage/commit/0b0f6fc89b4eb4872c76a498abbe1dc65998bb6e", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/commit/286bfc1f9cc3608a073b41016be302785be385d1", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/commit/61a10f19926aeda7f4a32de48d733e6710584634", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/commit/99729e925fd2bd40ba210022351a0ee6318e6197", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/commit/e786ac309ed2d775daf2309393c015c43902d6f6", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/releases/tag/v1.49.6", "tags": ["Patch", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/releases/tag/v1.50.5", "tags": ["Patch", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/releases/tag/v1.51.3", "tags": ["Patch", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/releases/tag/v1.53.2", "tags": ["Patch", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/releases/tag/v1.54.6", "tags": ["Patch", "Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/backstage/backstage/security/advisories/GHSA-qgvj-qcf8-xq73", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-863"}, {"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity with placeholder directives that reference resources outside the entity's source repository. Under certain configurations, this could allow access to data not intended to be available to the user. This issue is fixed in versions 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1."}], "lastModified": "2026-10-16T15:22:13.790", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:linuxfoundation:backstage_plugin-catalog-backend:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "E352863A-473B-4E3D-B274-1AEDA83923A2", "versionEndExcluding": "3.5.1"}, {"criteria": "cpe:2.3:a:linuxfoundation:backstage_plugin-catalog-backend:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "64717908-A121-43E2-83FF-56E1BC786A9C", "versionEndExcluding": "3.6.2", "versionStartIncluding": "3.6.0"}, {"criteria": "cpe:2.3:a:linuxfoundation:backstage_plugin-catalog-backend:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "1E1F3A76-5F43-4C34-880F-5082BA0FBD8E", "versionEndExcluding": "3.7.2", "versionStartIncluding": "3.7.0"}, {"criteria": "cpe:2.3:a:linuxfoundation:backstage_plugin-catalog-backend:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "3A2CAA96-1B99-41FC-AF0C-216DAB8EE659", "versionEndExcluding": "3.8.2", "versionStartIncluding": "3.8.0"}, {"criteria": "cpe:2.3:a:linuxfoundation:backstage_plugin-catalog-backend:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "7F0C2290-97C5-404F-B9E1-05A9335E6B82", "versionEndExcluding": "3.9.1", "versionStartIncluding": "3.9.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D095FA7-D58D-4B37-84B2-0E565FF215C1", "versionEndExcluding": "1.49.6"}, {"criteria": "cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DC5B9818-20D9-4507-80D2-6242DED888AE", "versionEndExcluding": "1.50.5", "versionStartIncluding": "1.50.0"}, {"criteria": "cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5E1B77C6-895E-4F0A-8195-2533B5FD7847", "versionEndExcluding": "1.51.3", "versionStartIncluding": "1.51.0"}, {"criteria": "cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E18CFF79-956B-4F89-A34E-31FE85217BF2", "versionEndExcluding": "1.53.2", "versionStartIncluding": "1.52.0"}, {"criteria": "cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D3E2CBFE-A84D-4D5C-BF4E-E4460AB99E18", "versionEndExcluding": "1.54.6", "versionStartIncluding": "1.54.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}