angular.js — security advisory
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.
- Products
- angular.js
- Affected versions
- 1.2.28-1ubuntu2, 1.2.28-1ubuntu2+esm1, 1.5.10-1, 1.5.10-1ubuntu0.1~esm1, 1.7.9-1, 1.7.9-1ubuntu0.1~esm1, 1.8.2-2, 1.8.2-2ubuntu0.1, 1.8.3-1, 1.8.3-1ubuntu0.24.04.1, 1.8.3-3
- Fixed versions
- Not specified
- CVEs
- CVE-2025-66035
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:35 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2025-66035
angular.js
Fixed versions: Not specified
angular.js
Fixed versions: Not specified
angular.js
Fixed versions: Not specified
angular.js
Fixed versions: Not specified
angular.js
Fixed versions: Not specified
angular.js
Fixed versions: Not specified
angular.js
Fixed versions: Not specified
angular.js
Fixed versions: Not specified
Complete source record
{
"id": "52c7418deb33457de33b54a1da0dba192adee54efddf71c6697cf20d045dc757",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-66035",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2025-66035",
"summary": "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.",
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"severity": "high",
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"aliases": [
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"metrics": [
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"type": "CVSS_V4",
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"modified": "2026-10-17T12:57:11.271221030Z",
"provider": "osv",
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"references": [
"https://ubuntu.com/security/CVE-2025-66035",
"https://www.cve.org/CVERecord?id=CVE-2025-66035",
"https://github.com/angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f",
"https://github.com/angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc",
"https://github.com/angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e",
"https://github.com/angular/angular/releases/tag/19.2.16",
"https://github.com/angular/angular/releases/tag/20.3.14",
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"https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37"
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"source_id": "core-osv",
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"published_at": "2025-11-26T23:15:00+00:00"
}