CVE-2021-32662
lowpriority · track · 26EPSS 0.013 · 70 %ileEUUSEPSS · scored 2026-10-27
Backstage is an open platform for building developer portals, and techdocs-common contains common functionalities for Backstage's TechDocs. In `@backstage/techdocs-common` versions prior to 0.6.3, a malicious actor could read sensitive files from the environment where TechDocs documentation is built and published by setting a particular path for `docs_dir` in `mkdocs.yml`. These files would then be available over the TechDocs backend API. This vulnerability is mitigated by the fact that an attacker would need access to modify the `mkdocs.yml` in the documentation source code, and would also need access to the TechDocs backend API. The vulnerability is patched in the `0.6.3` release of `@backstage/techdocs-common`.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–6.5
weaknesses
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affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-pgf8-28gg-vpr6Path traversal2021-06-04ghsa · osvUS
### Impact A malicious actor could read sensitive files from the environment where TechDocs documentation is built and published by setting a particular path for `docs_dir` in `mkdocs.yml`. These files would then be available over the TechDocs backend API. This vulnerability is mitigated by the fact that an attacker would need access to modify the `mkdocs.yml` in the documentation source code, and would also need access to the TechDocs backend API. ### Patches The vulnerability is patched in the `0.6.3` release of `@backstage/techdocs-common`. ### For more information If you have any questions or comments about this advisory: * Open an issue in the [Backstage repository](https://github.com/backstage/backstage) * Visit our chat, linked to in [Backstage README](https://github.com/backstage/backstage)
also known as (3)
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sources
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references (10)
External citations — patches, advisories, analysis.
- https://github.com/backstage/backstage/commit/8cefadca04cbf01d0394b0cb1983247e5f1d6208cnnvd
- https://github.com/backstage/backstage/releases/tag/release-2021-05-27cnnvd
- https://github.com/backstage/backstage/security/advisories/GHSA-pgf8-28gg-vpr6cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021060703cnnvd
- https://github.com/backstage/backstage/commit/8cefadca04cbf01d0394b0cb1983247e5f1d6208enisa_euvd
- https://github.com/backstage/backstage/releases/tag/release-2021-05-27enisa_euvd
- https://github.com/backstage/backstage/security/advisories/GHSA-pgf8-28gg-vpr6enisa_euvd
- https://github.com/backstage/backstage/commit/8cefadca04cbf01d0394b0cb1983247e5f1d6208PatchThird Party Advisorynvd
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