CVE-2026-106507Backstage: TechDocs arbitrary file read via mkdocs snippets
Updated under an hour ago ()
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It affects backstage and 3 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Backstage is an open framework for building developer portals. Prior to 1.15.4, the @backstage/plugin-techdocs-node package is affected by techdocs arbitrary file read via mkdocs snippets. Unsafe path resolution in TechDocs source tree handling allows an authenticated user who can register documentation sources to include content from outside the intended documentation boundary. Depending on deployment, this may expose files readable by the build process. This issue is fixed in version 1.15.4.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-59, CWE-61
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Oct 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
backstage backstage backstage:backstage (from the name) | before 1.54.6 | CNA record |
@backstage/plugin-techdocs-node plugin-techdocs-node backstage_plugin_techdocs_node:plugin_techdocs_node (from the name) | before 1.15.4 | CNA record |
linuxfoundation backstage_plugin-techdocs-node linuxfoundation:backstage_plugin-techdocs-node | before 1.15.4 | NVD |
linuxfoundation backstage linuxfoundation:backstage | before 1.54.6 | NVD |
References
- https://github.com/backstage/backstage/security/advisories/GHSA-vmqh-7cj9-mvcjx-refsource-confirm, mitigation, vendor-advisory
- https://github.com/backstage/backstage/commit/911ca36f10e654c5517da029129230fc05a4f580x-refsource-misc, patch
- https://github.com/backstage/backstage/releases/tag/v1.54.6x-refsource-misc, patch, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.