CVE-2025-66035
Angular HTTP Client Has XSRF Token Leakage via Protocol-Relative URLs
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | High7.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N |
| NVDNVD · Deferred | 4.0 | High7.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.72% · top 46% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npm@angular/commonGHSA-58c5-g7wp-6w37 (opens in a new tab)
References (9)
- https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f (opens in a new tab)x_refsource_MISC
- https://github.com/angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc (opens in a new tab)x_refsource_MISC
- https://github.com/angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e (opens in a new tab)x_refsource_MISC
- https://github.com/angular/angular/releases/tag/19.2.16 (opens in a new tab)x_refsource_MISC
- https://github.com/angular/angular/releases/tag/20.3.14 (opens in a new tab)x_refsource_MISC
- https://github.com/angular/angular/releases/tag/21.0.1 (opens in a new tab)x_refsource_MISC
- https://cert-portal.siemens.com/productcert/html/ssa-485750.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-58c5-g7wp-6w37 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-66035)Record last updated .