CVE-2026-106486
CVE-2026-106486 · Backstage: Improper filesystem validation in Bitbucket pull-request scaffolder actions
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Backstage is an open framework for building developer portals. Prior to 0.3.10 in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud and 0.2.25 in @backstage/plugin-scaffolder-backend-module-bitbucket-server, the Bitbucket pull-request Scaffolder actions did not sufficiently validate filesystem paths. An authenticated user who can execute an eligible template and influence an allowed Bitbucket repository could affect paths outside the expected working area, potentially compromising backend confidentiality, integrity, or availability. This issue is fixed in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud 0.3.10 and @backstage/plugin-scaffolder-backend-module-bitbucket-server 0.2.25.
CVSS 8.5 · High · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
backstage
- Versions
- < 1.54.6: Affected
No fix published
plugin-scaffolder-backend-module-bitbucket-cloud
- Versions
- < 0.3.10: Affected
No fix published
plugin-scaffolder-backend-module-bitbucket-server
- Versions
- < 0.2.25: Affected
No fix published
@backstage/plugin-scaffolder-backend-module-bitbucket-cloud npm
- Affected ranges
- SEMVER: < 0.3.10
Update to 0.3.10
@backstage/plugin-scaffolder-backend-module-bitbucket-server npm
- Affected ranges
- SEMVER: < 0.2.25
Update to 0.2.25