Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages.
CVE-2026-111753
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.34 and 21.0.3, the @angular/common HttpClient function xsrfInterceptorFn uses a regular expression that does not normalize request URLs in the same way as the browser's WHATWG URL parser. With XSRF protection enabled, a mutating HTTP request to an attacker-controlled URL containing backslashes, stripped control characters or spaces, or removable ASCII whitespace can be misclassified as relative and same-origin, causing the interceptor to attach the X-XSRF-TOKEN header before the browser dispatches the request to a cross-origin host. With permissive CORS handling for the custom header, the attacker can obtain the victim's XSRF token and use it to perform cross-site request forgery against the victim session. This issue is fixed in versions 20.3.34 and 21.0.3.
Assessment
- CVSS
- 5.9 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 5 November 2026
- Last updated
- 9 November 2026
- Weakness
- CWE-201, CWE-359
- Assigner
- security-advisories@github.com
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/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
At the source
References
- https://github.com/angular/angular/commit/20474d3f0fd7c64071add6e84acf720627e5c19b
- https://github.com/angular/angular/commit/933ce817d53e25926844fa56af8230816763d08e
- https://github.com/angular/angular/issues/71294
- https://github.com/angular/angular/pull/65683
- https://github.com/angular/angular/pull/71295
- https://github.com/angular/angular/releases/tag/21.0.3
- https://github.com/angular/angular/releases/tag/v20.3.34
- https://github.com/angular/angular/security/advisories/GHSA-jfgx-762w-99vr
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