---
cve: "CVE-2025-66035"
severity: "HIGH"
cvss: 7.7
epss: "65%"
vendor: "angular"
kev: false
exploited: false
published: "2025-11-26 23:15:49"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T02:51:09+02:00"
---

# CVE-2025-66035

> 7.7 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- eaa68c4cd75b69796ea085192597bdfdc0359e71 (Commit)
- 136e9232c4e7285e163b7683e8725a93ef8bd599 (Commit)

## Referenzen

- <https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37>
- <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>
- <https://github.com/angular/angular/releases/tag/21.0.1>
- <https://cert-portal.siemens.com/productcert/html/ssa-253495.html>
- <https://cert-portal.siemens.com/productcert/html/ssa-485750.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-66035) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_