CVE-2026-111753
Angular: XSRF Token Leakage via URL Parsing Discrepancy in Angular HTTP Client (Incomplete fix for CVE-2025-66035)
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.
Fixes and workarounds
Fix
@angular/common (npm): GitHub reports patched versions 21.0.3. Check the advisory for the affected release branch.
Source: GitHub GHSA-jfgx-762w-99vrFix
@angular/common (npm): GitHub reports patched versions 20.3.34. Check the advisory for the affected release branch.
Source: GitHub GHSA-jfgx-762w-99vrFix
@angular/common (npm): OSV reports a fixed version 21.0.3. Check the advisory for supported release branches.
Source: OSV GHSA-jfgx-762w-99vrFix
@angular/common (npm): OSV reports a fixed version 20.3.34. Check the advisory for supported release branches.
Source: OSV GHSA-jfgx-762w-99vrAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| angular angular |
<= 19.2.25 (affected) >= 20.0.0, < 20.3.34 (affected) >= 21.0.0, < 21.0.3 (affected) |
CNA: GitHub_M |
@angular/common@angular/common
npm |
>= 21.0.0, < 21.0.3 (affected, GitHub advisory range) | GitHub GHSA-jfgx-762w-99vr |
@angular/common@angular/common
npm |
>= 20.0.0, < 20.3.34 (affected, GitHub advisory range) | GitHub GHSA-jfgx-762w-99vr |
@angular/common@angular/common
npm |
<= 19.2.25 (affected, GitHub advisory range) | GitHub GHSA-jfgx-762w-99vr |
@angular/common@angular/common
npm |
≥ 21.0.0; < 21.0.3 (affected, semver); OSV events: introduced 21.0.0; fixed 21.0.3Source events (semver)Other versions: unaffected |
OSV GHSA-jfgx-762w-99vr |
@angular/common@angular/common
npm |
≥ 20.0.0; < 20.3.34 (affected, semver); OSV events: introduced 20.0.0; fixed 20.3.34Source events (semver)Other versions: unaffected |
OSV GHSA-jfgx-762w-99vr |
@angular/common@angular/common
npm |
≥ 0; ≤ 19.2.25 (affected, semver); OSV events: introduced 0; last affected 19.2.25Source events (semver)Other versions: unaffected |
OSV GHSA-jfgx-762w-99vr |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 5.9 medium |
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | CNA: GitHub_M |
| 4.0 / 5.9 medium |
CVSS: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 | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/angular/angular/security/advisories/GHSA-jfgx-762w-99vrCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/angular/angular/issues/71294CNA: GitHub_M · x_refsource_MISC
- https://github.com/angular/angular/pull/65683CNA: GitHub_M · x_refsource_MISC
- https://github.com/angular/angular/pull/71295CNA: GitHub_M · x_refsource_MISC
- https://github.com/angular/angular/commit/20474d3f0fd7c64071add6e84acf720627e5c19bCNA: GitHub_M · x_refsource_MISC
- https://github.com/angular/angular/commit/933ce817d53e25926844fa56af8230816763d08eCNA: GitHub_M · x_refsource_MISC
- https://github.com/angular/angular/releases/tag/21.0.3CNA: GitHub_M · x_refsource_MISC
- https://github.com/angular/angular/releases/tag/v20.3.34CNA: GitHub_M · x_refsource_MISC
- https://github.com/angular/angular/commit/20474d3f0fd7c64071add6e84acf720627e5c19b[email protected]
- https://github.com/angular/angular/commit/933ce817d53e25926844fa56af8230816763d08e[email protected]
- https://github.com/angular/angular/issues/71294[email protected]
- https://github.com/angular/angular/pull/65683[email protected]
- https://github.com/angular/angular/pull/71295[email protected]
- https://github.com/angular/angular/releases/tag/21.0.3[email protected]
- https://github.com/angular/angular/releases/tag/v20.3.34[email protected]
- https://github.com/angular/angular/security/advisories/GHSA-jfgx-762w-99vr[email protected]
- https://github.com/angular/angular/security/advisories/GHSA-jfgx-762w-99vrGitHub Security Advisories · advisory
- https://github.com/advisories/GHSA-jfgx-762w-99vrOSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-jfgx-762w-99vrOSV / GitHub Security Advisories · osv
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