Disclosure summary
### Impact An authenticated attacker with control over a TechDocs source repository could cause a documentation build to retrieve and publish data from network locations reachable by the build environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern cloud metadata services that require tokens or special headers are not directly accessible through the affected behavior. ### Patches Upgrade `@backstage/plugin-techdocs-node` to a patched version for the applicable release line: - `1.14.x`: upgrade to `1.14.7` or later in that line, available in [Backstage v1.50.6](https://github.com/backstage/backstage/releases/tag/v1.50.6). - `1.15.x`: upgrade to `1.15.5` or later, available in [Backstage v1.54.8](https://github.com/backstage/backstage/releases/tag/v1.54.8). - Current mainline: upgrade to `2.0.0` or later, available in [Backstage v1.55.0](https://github.com/backstage/backstage/releases/tag/v1.55.0). The update removes MkDocs plugins outside the built-in allowlist. To retain additional plugins, review them and configure `techdocs.generator.mkdocs.dangerouslyAllowAdditionalPlugins`, or supply `dangerouslyAllowAdditionalPlugins` when crea
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
GitHub Reviewed Security Advisories · GHSA-q38j-6vcm-2f5m
Open original source · Updated Oct 07, 2026
Backstage: Improper validation of MkDocs plugin configuration in TechDocs
Source severity: HIGH / 0
| Ecosystem | Package | Affected range | First patched |
|---|---|---|---|
| npm | @backstage/plugin-techdocs-node | >= 0.11.12, < 1.14.7 | 1.14.7 |
| npm | @backstage/plugin-techdocs-node | >= 1.15.0, < 1.15.5 | 1.15.5 |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Reviewed advisory
PUBLISHED 2026-10-07T16:25:19-04:00
MODIFIED 2026-10-07T16:25:23-04:00
INGESTED 2026-10-08T12:30:39-04:00