Backstage: Improper validation of TechDocs MkDocs configuration

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-106558 · Microsoft / collected KEV context

EUVD-2026-94371

GHSA-qmw3-745m-w99g

cve-program · CVE-2026-106558

• 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

euvd · EUVD-2026-94371

• 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

nvd · CVE-2026-106558

• 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
• https://github.com/backstage/backstage/security/advisories/GHSA-qmw3-745m-w99g

osv · GHSA-qmw3-745m-w99g

• https://github.com/backstage/backstage/security/advisories/GHSA-qmw3-745m-w99g
• https://nvd.nist.gov/vuln/detail/CVE-2026-106558
• 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
• 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

No related operational record is retained in the current change model.