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CVE-2026-104871

CVE-2026-104871 · Angular SSR: Path Traversal to Sibling Directories in CommonEngine on Windows

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

The Angular SSR is a server-rise rendering tool for Angular applications. Prior to versions 20.3.36, 21.2.23, and 22.1.7, the CommonEngine retrieveSSGPage prerendered-page retrieval logic in @angular/ssr/node, and in @angular/ssr for versions 17 through 18, accepts a relative request URL containing a backslash parent-traversal segment on Windows. The non-special resolve:// URL base preserves the backslash, path.join interprets it as a Windows separator, and the pagePath.startsWith(normalize(publicPath)) check incorrectly accepts a sibling output directory whose name shares the configured public-directory prefix. An unauthenticated requester can therefore retrieve a sibling prerendered HTML page when that page contains the Angular SSG marker. The issue is limited to Windows deployments that pass relative request URLs to CommonEngine.render, have a prefix-sharing sibling output directory, and contain qualifying prerendered Angular HTML; it does not provide arbitrary file read. This issue is fixed in versions 20.3.36, 21.2.23, and 22.1.7.

CVSS 6.3 · Moyenne · EPSS 0,4% · Correctif disponible

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Mise à jour

Pile logicielle: node

Produits et versions concernés

  • angular-cli

    Versions du logiciel
    • < 20.3.36: Concernée
    • >= 21.0.0, < 21.2.23: Concernée
    • >= 22.0.0, < 22.1.7: Concernée

    Aucun correctif publié

  • @angular/ssr npm

    Plages de versions concernées
    • SEMVER: ≥ 22.0.0, < 22.1.7

    Mettez à jour vers 22.1.7

  • @angular/ssr npm

    Plages de versions concernées
    • SEMVER: ≥ 21.0.0, < 21.2.23

    Mettez à jour vers 21.2.23

  • @angular/ssr npm

    Plages de versions concernées
    • SEMVER: ≥ 20.0.0, < 20.3.36

    Mettez à jour vers 20.3.36

  • @angular/ssr npm

    Plages de versions concernées
    • SEMVER: ≤ 19.2.27

    Aucun correctif publié

Sources originales

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