CVE-2026-29186
CVE-2026-29186 · @backstage/plugin-techdocs-node: TechDocs Mkdocs Configuration Key Enables Arbitrary Code Execution
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
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.
CVSS 7.7 · Élevée · EPSS 0,8% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
backstage
- Versions du logiciel
- < 1.14.3: Concernée
Aucun correctif publié
@backstage/plugin-techdocs-node npm
- Plages de versions concernées
- SEMVER: < 1.14.3
Mettez à jour vers 1.14.3
Sources originales
- https://github.com/backstage/backstage/security/advisories/GHSA-928r-fm4v-mvrw
- https://access.redhat.com/security/cve/CVE-2026-29186
- https://bugzilla.redhat.com/show_bug.cgi?id=2445480
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29186.json
- https://access.redhat.com/errata/RHSA-2026:9742
- https://access.redhat.com/errata/RHSA-2026:13826
- https://nvd.nist.gov/vuln/detail/CVE-2026-29186