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CVE-2025-66035

CVE-2025-66035 · Angular HTTP Client Has XSRF Token Leakage via Protocol-Relative URLs

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.16, 20.3.14, and 21.0.1, there is a XSRF token leakage via protocol-relative URLs in angular HTTP clients. The vulnerability is a Credential Leak by App Logic that leads to the unauthorized disclosure of the Cross-Site Request Forgery (XSRF) token to an attacker-controlled domain. Angular's HttpClient has a built-in XSRF protection mechanism that works by checking if a request URL starts with a protocol (http:// or https://) to determine if it is cross-origin. If the URL starts with protocol-relative URL (//), it is incorrectly treated as a same-origin request, and the XSRF token is automatically added to the X-XSRF-TOKEN header. This issue has been patched in versions 19.2.16, 20.3.14, and 21.0.1. A workaround for this issue involves avoiding using protocol-relative URLs (URLs starting with //) in HttpClient requests. All backend communication URLs should be hardcoded as relative paths (starting with a single /) or fully qualified, trusted absolute URLs.

CVSS 7.7 · High · EPSS 0.7% · Fix available

Published
Updated

Stack: system · node

Affected products and versions

  • angular

    Versions
    • >= 21.0.0-next.0, < 21.0.1: Affected
    • >= 20.0.0-next.0, < 20.3.14: Affected
    • < 19.2.16: Affected

    No fix published

  • @angular/common npm

    Affected ranges
    • SEMVER: ≥ 21.0.0-next.0, < 21.0.1

    Update to 21.0.1

  • @angular/common npm

    Affected ranges
    • SEMVER: ≥ 20.0.0-next.0, < 20.3.14

    Update to 20.3.14

  • @angular/common npm

    Affected ranges
    • SEMVER: < 19.2.16

    Update to 19.2.16

  • angular.js Ubuntu:Pro:16.04:LTS

    Versions
    • 1.2.28-1ubuntu2
    • 1.2.28-1ubuntu2+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • angular.js Ubuntu:Pro:18.04:LTS

    Versions
    • 1.5.10-1
    • 1.5.10-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • angular.js Ubuntu:Pro:20.04:LTS

    Versions
    • 1.5.10-1
    • 1.7.9-1
    • 1.7.9-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • angular.js Ubuntu:22.04:LTS

    Versions
    • 1.8.2-2
    • 1.8.2-2ubuntu0.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • angular.js Ubuntu:24.04:LTS

    Versions
    • 1.8.3-1
    • 1.8.3-1ubuntu0.24.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • angular.js Ubuntu:25.10

    Versions
    • 1.8.3-1
    • 1.8.3-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • angular.js Ubuntu:26.10

    Versions
    • 1.8.3-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • angular.js Ubuntu:26.04:LTS

    Versions
    • 1.8.3-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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