What is CVE-2026-41423?

CVE-2026-41423 is a medium-severity vulnerability in Angular, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-05-08.

How severe is CVE-2026-41423?

Medium severity. CVSS v3 base score is 5.3 out of 10.

SSRF in Angular

CVE-2026-41423

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.21, 20.3.19, 21.2.9, and 22.0.0-next.8, a Server-Side Request Forgery (SSRF) vulnerability exists in @angular/platform-server due to improper handling of URLs during Server-Side Rendering (SSR). When an attacker sends a request such as GET /\evil.com/ HTTP/1.1 the server engine (Express, etc.) passes the URL string to Angular’s rendering functions. Because the URL parser normalizes the backslash to a forward slash for HTTP/HTTPS schemes, the internal state of the application is hijacked to believe the current origin is evil.com. This misinterpretation tricks the application into treating the attacker’s domain as the local origin. Consequently, any relative HttpClient requests or PlatformLocation.hostname references are redirected to the attacker controlled server, potentially exposing internal APIs or metadata services. This issue has been patched in versions 19.2.21, 20.3.19, 21.2.9, and 22.0.0-next.8.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2026-05-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.4th percentile), scored 2026-09-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Angular — versions >= 22.0.0-next.0, < 22.0.0-next.8, >= 21.0.0-next.0, < 21.2.9, 22.0.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

github.com/angular/angular/security/advisories/GHSA-45q2-gjvg-7973 (Mitigation, Vendor Advisory)
github.com/angular/angular/pull/68194 (Issue Tracking)
github.com/angular/angular/commit/ede7c58a2aa13fdccc8f0b67ce93ba1c11749412 (Patch)

Frequently asked questions

What is CVE-2026-41423?: CVE-2026-41423 is a medium-severity vulnerability in Angular, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-05-08.
How severe is CVE-2026-41423?: Medium severity. CVSS v3 base score is 5.3 out of 10.