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7.5
CVE-2026-111754: Angular server‑side rendering can redirect users to attacker site
CVE-2026-111754 · published 1 day ago
Summary
Versions of Angular that use server‑side rendering before the latest updates may let a crafted web address cause the server to send a redirect to a location controlled by an attacker. This could cause visitors to be sent to a malicious website without their knowledge. Upgrade Angular to the newest release to stop this behavior.
What to do
- Update angular platform-server to version 22.2.1.
- Update angular platform-server to version 21.2.25.
- Update angular platform-server to version 20.3.33.
- Update angular @angular/platform-server to version 22.2.1.
- Update angular @angular/platform-server to version 21.2.25.
- Update angular @angular/platform-server to version 20.3.33.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| – | angular | angular | <= 19.2.25 |
| npm | angular | platform-server |
>= 22.0.0, < 22.2.1 >= 21.0.0, < 21.2.25 >= 20.0.0, < 20.3.33 <= 19.2.25 Fix: upgrade to 22.2.1
|
| npm | angular | @angular/platform-server |
>= 22.0.0, < 22.2.1 >= 21.0.0, < 21.2.25 >= 20.0.0, < 20.3.33 <= 19.2.25 Fix: upgrade to 22.2.1
|
Original advisory text
Angular: Open Redirect via Protocol-Relative URLs in Server-Side Rendering (SSR)
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.33, 21.2.25, and 22.2.1, ServerPlatformLocation in Angular server-side rendering checks for protocol-relative URLs before WHATWG URL normalization. A request path containing a popping dot segment followed by multiple slashes can bypass the raw resolveUrl check and normalize to a pathname beginning with two slashes. When Angular SSR detects a mismatch with the router's final location, it can place that pathname in an HTTP Location header, causing a browser to navigate to an attacker-controlled origin. Affected applications use @angular/platform-server and @angular/ssr and either expose compatible parameter or child route shapes or pass user-controlled navigation targets through infrastructure that preserves the relevant dot segments or semicolons. Pure client-side SPAs are not affected. This issue is fixed in versions 20.3.33, 21.2.25, and 22.2.1.
References
- https://github.com/angular/angular/commit/450af9c813c7660b9bd91e5635f705ee3ed7b3... Patch
- https://github.com/angular/angular/commit/d7d81e189d227108c3b9d39178dbb7389f6f97... URL
- https://github.com/advisories/GHSA-w739-gvwx-grc3
- https://github.com/angular/angular/releases/tag/v21.2.25 URL
- https://github.com/angular/angular Product
- https://github.com/angular/angular/commit/83944fc8c50e86be90e8ec4184cd15002b5af2... Patch
- https://github.com/angular/angular/commit/928dcfd2582152655b5559509d057bf6a5a195... Patch
- https://github.com/angular/angular/issues/71076 Third Party Advisory
- https://github.com/angular/angular/pull/71077 Patch
- https://github.com/angular/angular/pull/71078 Patch
- https://github.com/angular/angular/pull/71079 Patch
- https://github.com/angular/angular/releases/tag/v20.3.33 URL
- https://github.com/angular/angular/security/advisories/GHSA-w739-gvwx-grc3 Vendor Advisory
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-1117... Vendor Advisory
- https://github.com/angular/angular/releases/tag/v22.2.1 URL
- https://nvd.nist.gov/vuln/detail/CVE-2026-111754 Vendor Advisory
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker partial control (estimated)
Severity
7.5
High
Type
CWE-601Open Redirect
Timeline
Published3 Nov 2026
Updated4 Nov 2026
First seen20 Oct 2026
Sources
GHSA-w739-gvwx-grc3 · GHSA
CVE-2026-111754 · NVD
GHSA-w739-gvwx-grc3 · OSV
CVE-2026-111754 · MITRE
CVE-2026-111754 · OSV
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