CVE-2026-106507

medium

Description

Backstage is an open framework for building developer portals. Prior to 1.15.4, the @backstage/plugin-techdocs-node package is affected by techdocs arbitrary file read via mkdocs snippets. Unsafe path resolution in TechDocs source tree handling allows an authenticated user who can register documentation sources to include content from outside the intended documentation boundary. Depending on deployment, this may expose files readable by the build process. This issue is fixed in version 1.15.4.

References

https://github.com/backstage/backstage/security/advisories/GHSA-vmqh-7cj9-mvcj

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

https://github.com/backstage/backstage/commit/911ca36f10e654c5517da029129230fc05a4f580

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-94072

Details

Source: Mitre, NVD

Published: 2026-10-06

Updated: 2026-10-09

Risk Information

CVSS v2

Base Score: 6.8

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

Severity: Medium

CVSS v3

Base Score: 6.5

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

Severity: Medium

EPSS

EPSS: 0.00283