CVE-2026-29186

HIGH

7.7

Description

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.

Details CVE

Score CVSS v3.17.7

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisLOW

Interaction utilisateurNONE

Publie3/7/2026

Derniere modification3/11/2026

Sourcenvd

Observations honeypot0

Produits affectes

linuxfoundation:backstage_plugin-techdocs-node

Faiblesses (CWE)

CWE-74CWE-434CWE-434

References

https://github.com/backstage/backstage/security/advisories/GHSA-928r-fm4v-mvrw(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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