CVE-2026-106560
mediumpriority · track · 26EPSS 0.003 · 24 %ileUSEPSS · scored 2026-10-27
Backstage is an open framework for building developer portals. Prior to 0.3.25, the @backstage/plugin-scaffolder-backend-module-confluence-to-markdown package is affected by improper repository path validation in a scaffolder backend module. An authenticated user who can execute an affected template and control its repository file location may cause generated content to be written outside the task workspace, within locations writable by the Backstage backend process. This issue is fixed in version 0.3.25.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
- linuxfoundation backstage/plugin-scaffolder-backend-module-confluence-to-markdown< 0.3.25nvdUScpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend-module-confluence-to-markdown:*:*:*:*:*:*:*:*
- npm @backstage/plugin-scaffolder-backend-module-confluence-to-markdown< 0.3.25osvUSpkg:npm/%40backstage/plugin-scaffolder-backend-module-confluence-to-markdown
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-2cmg-v53w-8xfpBackstage: Improper repository path validation in a Scaffolder backend module2026-10-07ghsa · osvUS
### Impact An authenticated user who can execute an affected template and control its repository file location may cause generated content to be written outside the task workspace, within locations writable by the Backstage backend process. ### Patches Patched in `@backstage/plugin-scaffolder-backend-module-confluence-to-markdown` version `0.3.25` ### Workarounds - Restrict execution of templates using the affected action to trusted users. - Remove or disable the affected action until the patched package is deployed.
sources
Which sources assert this record, and when.
references (3) nvd
External citations — patches, advisories, analysis.
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