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CVE-2026-104871

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

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

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 · Media · EPSS 0,4% · Corrección disponible

Publicación
Actualización

Pila tecnológica: node

Productos y versiones afectados

  • angular-cli

    Versiones
    • < 20.3.36: Afectada
    • >= 21.0.0, < 21.2.23: Afectada
    • >= 22.0.0, < 22.1.7: Afectada

    Sin corrección publicada

  • @angular/ssr npm

    Intervalos de versiones afectados
    • SEMVER: ≥ 22.0.0, < 22.1.7

    Actualiza a 22.1.7

  • @angular/ssr npm

    Intervalos de versiones afectados
    • SEMVER: ≥ 21.0.0, < 21.2.23

    Actualiza a 21.2.23

  • @angular/ssr npm

    Intervalos de versiones afectados
    • SEMVER: ≥ 20.0.0, < 20.3.36

    Actualiza a 20.3.36

  • @angular/ssr npm

    Intervalos de versiones afectados
    • SEMVER: ≤ 19.2.27

    Sin corrección publicada

Fuentes originales

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