# CVE-2026-88056

## Summary

- **CVE ID:** CVE-2026-88056
- **Severity:** HIGH
- **CVSS Score:** 8.6 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-918
- **Published:** Sep 10, 2026
- **Last Modified:** Sep 10, 2026

## Description

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular Server-Side Rendering in @angular/platform-server processes user-controlled resource or request URLs through HttpClient after application code validates them with WHATWG URL parsing. The resolveUrl and parseUrl utilities called String.prototype.trim(), which removed leading Unicode whitespace such as U+00A0 or U+FEFF after the input passed a same-origin check, converting a relative path into a protocol-relative attacker-controlled URL. In affected applications that attach sensitive server-side credentials such as Authorization headers to approved requests, relativeUrlsTransformerInterceptorFn then dispatched the request to the attacker-controlled origin, causing SSRF and credential disclosure. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4.

## Affected Products

- angular — angular (<= 19.2.25)
- angular — angular (>= 20.0.0, < 20.3.30)
- angular — angular (>= 21.0.0, < 21.2.22)
- angular — angular (>= 22.0.0, < 22.1.4)

## References

- [CNA](https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4)
- [CNA](https://github.com/angular/angular/commit/3e924cc8dbbb57f23b262cb8f0d7e2bd0673034c)
- [CNA](https://github.com/angular/angular/commit/5aa6d97deb9ef1de14e23748b7fa74f97d183132)
- [CNA](https://github.com/angular/angular/commit/71e52d1396b9cef98652929b73e08c4cde645970)
- [CNA](https://github.com/angular/angular/releases/tag/v20.3.30)
- [CNA](https://github.com/angular/angular/releases/tag/v21.2.22)
- [CNA](https://github.com/angular/angular/releases/tag/v22.1.4)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._