{"id":"EUVD-2026-94371","revision":"e0e95126b5ed4cfba45d9b20b28f5543","records":[{"revision":"e0e95126b5ed4cfba45d9b20b28f5543","observedAt":"2026-10-28T00:50:13.355+00:00","statement":{"source":"euvd","id":"EUVD-2026-94371","aliases":["CVE-2026-106558","GHSA-qmw3-745m-w99g"],"title":"Backstage is an open framework for building developer portals. Prior to 1.14.8, 1.15.6, and 2.0.1, the @backstage/plugin-techdocs-node package improperly validated mapping-style markdown_extensions configuration. An authenticated attacker w…","description":"Backstage is an open framework for building developer portals. Prior to 1.14.8, 1.15.6, and 2.0.1, the @backstage/plugin-techdocs-node package improperly validated mapping-style markdown_extensions configuration. An authenticated attacker who can register or influence an SCM-backed documentation source may bypass TechDocs sanitization and cause Python objects to be imported and instantiated in the generator runtime, leading to arbitrary code execution. Earlier fixes in versions 1.14.6 and 1.15.4 did not fully address the supported mapping representation of markdown_extensions. Impact is greatest when documentation generation runs with backend credentials, filesystem access, or internal network access. This issue is fixed in versions 1.14.8, 1.15.6, and 2.0.1.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":null}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-qmw3-745m-w99g","https://github.com/backstage/backstage/commit/32723a0fe4e12ed80535fc65d5331765c55aa91b","https://github.com/backstage/backstage/commit/944edb51c8524d3664b18f2d57ba101b1c93b709","https://github.com/backstage/backstage/commit/f18e9abcc6051491862b15e4fc60e69f8d52310c","https://github.com/backstage/backstage/releases/tag/v1.50.7","https://github.com/backstage/backstage/releases/tag/v1.54.9","https://github.com/backstage/backstage/releases/tag/v1.55.2"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-94371","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 7, 2026, 2:45:25 PM","dateUpdated":"Oct 10, 2026, 2:27:17 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-94371","identifiers":["EUVD-2026-94371","CVE-2026-106558","GHSA-qmw3-745m-w99g"]},"retained":false,"historicalAffected":[]}],"coverage":[]}