CVE-2026-88056
9.1, criticalangular Server-Side Request Forgery Vulnerability
- CVSS
- 9.1, critical critical CVSS v3.1
- EPSS, next 30 days
- 0.5% higher than 44.2% of scored CVEs
- Exploitation
- Exploit code published
- Published
- 10 Sept 2026a month ago
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.
Details
- Vendor
- Angular
- Product
- angular
- Weakness
- CWE-918 (opens in a new tab)
- Status
- Analyzed
- Updated
- 29 Sept 2026
- Assigner
- security-advisories@github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References 7
Exploit code 1
Patches and fixes 3
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 18 Oct 2026, not the live upstream state.