GHSA-g8rx-f7m5-7794
Backstage has iImproper filesystem validation in Bitbucket pull-request scaffolder actions
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @backstage/plugin-scaffolder-backend-module-bitbucket-cloud | < 0.3.10 | 0.3.10 |
| npm | @backstage/plugin-scaffolder-backend-module-bitbucket-server | < 0.2.25 | 0.2.25 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
An authenticated user who can execute an eligible template and influence an allowed Bitbucket repository could affect filesystem paths outside the expected working area. Depending on the backend deployment, this could compromise backend confidentiality, integrity, or availability.
### Patches
- `@backstage/plugin-scaffolder-backend-module-bitbucket-cloud` version `0.3.10`
- `@backstage/plugin-scaffolder-backend-module-bitbucket-server` version `0.2.25`
### Workarounds
- Restrict execution of affected Scaffolder templates to trusted users.
- Avoid templates that accept user-controlled target repositories for these actions.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/backstage/backstage/security/advisories/GHSA-g8rx-f7m5-7794
- https://nvd.nist.gov/vuln/detail/CVE-2026-106486
- https://github.com/backstage/backstage/commit/818528e112c36167d76187e9e63fb518399c4dd2
- https://github.com/backstage/backstage
- https://github.com/backstage/backstage/releases/tag/v1.54.6