Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-88056

CVE-2026-88056HIGH

Angular: SSRF and Cross-Origin Credential Disclosure via URL Resolution Discrepancy in SSR

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   P   H   H   N    8.6   .0054   43.5     —

AFFECTED
  Product  Versions      Fixed
  angular  <= 19.2.25 –  —

TIMELINE
  Sep 9   Reserved by GitHub_M
  Sep 10  Published (CNA: GitHub_M)
  Sep 29  EXPLOIT PUBLISHED — CVE-2026-88056 (angular). Public exploit reference added.

CWE-918 · CNA: GitHub_M · CVSS v4.0 · 7 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 9, 2026	Reserved	Reserved by GitHub_M
September 10, 2026	Published	Published (CNA: GitHub_M)
September 29, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-88056 (angular). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
angular	angular	—	<= 19.2.25	—

Weaknesses

CWE-918

References (7)

https://github.com/angular/angular/commit/3e924cc8dbbb57f23b262cb8f0d7e2bd0673034c [Patch]
https://github.com/angular/angular/commit/5aa6d97deb9ef1de14e23748b7fa74f97d183132 [Patch]
https://github.com/angular/angular/commit/71e52d1396b9cef98652929b73e08c4cde645970 [Patch]
https://github.com/angular/angular/releases/tag/v20.3.30 [Release Notes]
https://github.com/angular/angular/releases/tag/v21.2.22 [Release Notes]
https://github.com/angular/angular/releases/tag/v22.1.4 [Release Notes]
https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-88056 at cve.org

Vendors: angular

Weaknesses: CWE-918

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-88056 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.