CVE-2026-106505

high

Description

Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4.

References

https://github.com/backstage/backstage/security/advisories/GHSA-p75x-jh7p-ppcx

https://github.com/backstage/backstage/releases/tag/v1.54.6

https://github.com/backstage/backstage/releases/tag/v1.50.5

https://github.com/backstage/backstage/commit/ef92d3d2b76046205c580e7152956514c15640db

https://github.com/backstage/backstage/commit/a7d995f11a5d27f0efbdbe8bb6c21b06988c79c9

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-94070

Details

Source: Mitre, NVD

Published: 2026-10-06

Updated: 2026-10-09

Risk Information

CVSS v2

Base Score: 7.1

Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.5

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00274