Lookup for vulnerable packages by Package URL.
| Purl | pkg:npm/%40backstage/plugin-techdocs-node@1.14.1 |
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| Type | npm |
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| Namespace | @backstage |
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| Name | plugin-techdocs-node |
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| Version | 1.14.1 |
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| Qualifiers |
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| Subpath | |
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| Is_vulnerable | true |
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| Next_non_vulnerable_version | 1.14.3 |
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| Latest_non_vulnerable_version | 1.14.3 |
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| Affected_by_vulnerabilities |
| 0 |
| url |
VCID-55sp-nuj7-nkf8 |
| vulnerability_id |
VCID-55sp-nuj7-nkf8 |
| summary |
Backstage is an open framework for building developer portals. Prior to version 1.14.3, this is a configuration bypass vulnerability that enables arbitrary code execution. The @backstage/plugin-techdocs-node package uses an allowlist to filter dangerous MkDocs configuration keys during the documentation build process. A gap in this allowlist allows attackers to craft an mkdocs.yml that causes arbitrary Python code execution, completely bypassing TechDocs' security controls. This issue has been patched in version 1.14.3. |
| references |
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| aliases |
CVE-2026-29186, GHSA-928r-fm4v-mvrw
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| risk_score |
4.1 |
| exploitability |
0.5 |
| weighted_severity |
8.2 |
| resource_url |
http://public2.vulnerablecode.io/vulnerabilities/VCID-55sp-nuj7-nkf8 |
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| Fixing_vulnerabilities |
| 0 |
| url |
VCID-mdv6-fupk-dqgh |
| vulnerability_id |
VCID-mdv6-fupk-dqgh |
| summary |
Backstage is an open framework for building developer portals, and @backstage/plugin-techdocs-node provides common node.js functionalities for TechDocs. In versions of @backstage/plugin-techdocs-node prior to 1.13.11 and 1.14.1, when TechDocs is configured with `runIn: local`, a malicious actor who can submit or modify a repository's `mkdocs.yml` file can execute arbitrary Python code on the TechDocs build server via MkDocs hooks configuration. @backstage/plugin-techdocs-node versions 1.13.11 and 1.14.1 contain a fix. The fix introduces an allowlist of supported MkDocs configuration keys. Unsupported configuration keys (including `hooks`) are now removed from `mkdocs.yml` before running the generator, with a warning logged to indicate which keys were removed. Users of `@techdocs/cli` should also upgrade to the latest version, which includes the fixed `@backstage/plugin-techdocs-node` dependency. Some workarounds are available. Configure TechDocs with `runIn: docker` instead of `runIn: local` to provide container isolation, though it does not fully mitigate the risk. Limit who can modify `mkdocs.yml` files in repositories that TechDocs processes; only allow trusted contributors. Implement PR review requirements for changes to `mkdocs.yml` files to detect malicious `hooks` configurations before they are merged. Use MkDocs < 1.4.0 (e.g., 1.3.1) which does not support hooks. Note: This may limit access to newer MkDocs features. Building documentation in CI/CD pipelines using `@techdocs/cli` does not mitigate this vulnerability, as the CLI uses the same vulnerable `@backstage/plugin-techdocs-node` package. |
| references |
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| reference_url |
https://api.first.org/data/v1/epss?cve=CVE-2026-25153 |
| reference_id |
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| reference_type |
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| scores |
| 0 |
| value |
0.0003 |
| scoring_system |
epss |
| scoring_elements |
0.0906 |
| published_at |
2026-06-14T12:55:00Z |
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| 1 |
| value |
0.0003 |
| scoring_system |
epss |
| scoring_elements |
0.09072 |
| published_at |
2026-06-13T12:55:00Z |
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| 2 |
| value |
0.0003 |
| scoring_system |
epss |
| scoring_elements |
0.09026 |
| published_at |
2026-06-11T12:55:00Z |
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| 3 |
| value |
0.0003 |
| scoring_system |
epss |
| scoring_elements |
0.0907 |
| published_at |
2026-06-12T12:55:00Z |
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| url |
https://api.first.org/data/v1/epss?cve=CVE-2026-25153 |
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| fixed_packages |
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| aliases |
CVE-2026-25153, GHSA-6jr7-99pf-8vgf
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| risk_score |
4.0 |
| exploitability |
0.5 |
| weighted_severity |
8.0 |
| resource_url |
http://public2.vulnerablecode.io/vulnerabilities/VCID-mdv6-fupk-dqgh |
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| url |
VCID-s1rt-8bjn-mba8 |
| vulnerability_id |
VCID-s1rt-8bjn-mba8 |
| summary |
Backstage is an open framework for building developer portals, and @backstage/plugin-techdocs-node provides common node.js functionalities for TechDocs. In versions of @backstage/plugin-techdocs-node prior to 1.13.11 and 1.14.1, a path traversal vulnerability in the TechDocs local generator allows attackers to read arbitrary files from the host filesystem when Backstage is configured with `techdocs.generator.runIn: local`. When processing documentation from untrusted sources, symlinks within the docs directory are followed by MkDocs during the build process. File contents are embedded into generated HTML and exposed to users who can view the documentation. This vulnerability is fixed in` @backstage/plugin-techdocs-node` versions 1.13.11 and 1.14.1. Some workarounds are available. Switch to `runIn: docker` in `app-config.yaml` and/or restrict write access to TechDocs source repositories to trusted users only. |
| references |
| 0 |
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| 1 |
| reference_url |
https://api.first.org/data/v1/epss?cve=CVE-2026-25152 |
| reference_id |
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| reference_type |
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| scores |
| 0 |
| value |
0.00025 |
| scoring_system |
epss |
| scoring_elements |
0.07558 |
| published_at |
2026-06-14T12:55:00Z |
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| 1 |
| value |
0.00025 |
| scoring_system |
epss |
| scoring_elements |
0.07567 |
| published_at |
2026-06-13T12:55:00Z |
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| 2 |
| value |
0.00025 |
| scoring_system |
epss |
| scoring_elements |
0.07537 |
| published_at |
2026-06-11T12:55:00Z |
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| 3 |
| value |
0.00025 |
| scoring_system |
epss |
| scoring_elements |
0.07573 |
| published_at |
2026-06-12T12:55:00Z |
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| url |
https://api.first.org/data/v1/epss?cve=CVE-2026-25152 |
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| aliases |
CVE-2026-25152, GHSA-w669-jj7h-88m9
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| risk_score |
3.1 |
| exploitability |
0.5 |
| weighted_severity |
6.2 |
| resource_url |
http://public2.vulnerablecode.io/vulnerabilities/VCID-s1rt-8bjn-mba8 |
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| Risk_score | 4.1 |
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| Resource_url | http://public2.vulnerablecode.io/packages/pkg:npm/%2540backstage/plugin-techdocs-node@1.14.1 |
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