CVE-2026-111754
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.
Executive briefing
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Evidence confidence: Not assessed Evidence-derived, not an exploitability verdict
Severity & attack characteristics
CVSS vector:CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Technical explanation & impact
Technical root-cause details are not available in the current source record.
Assess the impact using the published CVSS metrics and the affected vendor component.
Affected products and versions
NVD has not supplied machine-readable vulnerable CPE product/version entries for this CVE. This is an information gap, not proof that no products are affected. Check the vendor advisory references below.
Remediation & validation
- Identify exposure by comparing the affected product and version ranges with your asset inventory, SBOM and externally exposed services.
- Review the linked vendor security advisory or patch notes. Upgrade to a vendor-confirmed fixed release; do not infer a fixed version from the CVE description.
- Until patched, consider restricting network access or disabling the affected feature where operationally safe. These are temporary controls, not a substitute for a vendor fix.
- Validate the remediation with a version check and vulnerability rescan, then retain change evidence.
No fixed version is displayed unless it is explicitly established by a vendor advisory. Follow the vendor's release notes for exact product and branch applicability.
Vendor advisories, patches & exploit references
- https://github.com/angular/angular/commit/450af9c813c7660b9bd91e5635f705ee3ed7b32a VENDOR security-advisories@github.com
- https://github.com/angular/angular/commit/83944fc8c50e86be90e8ec4184cd15002b5af262 VENDOR security-advisories@github.com
- https://github.com/angular/angular/commit/928dcfd2582152655b5559509d057bf6a5a19521 VENDOR security-advisories@github.com
- https://github.com/angular/angular/issues/71076 VENDOR security-advisories@github.com
- https://github.com/angular/angular/pull/71077 VENDOR security-advisories@github.com
- https://github.com/angular/angular/pull/71078 VENDOR security-advisories@github.com
- https://github.com/angular/angular/pull/71079 VENDOR security-advisories@github.com
- https://github.com/angular/angular/releases/tag/v20.3.33 VENDOR security-advisories@github.com
- https://github.com/angular/angular/releases/tag/v21.2.25 VENDOR security-advisories@github.com
- https://github.com/angular/angular/releases/tag/v22.2.1 VENDOR security-advisories@github.com
- https://github.com/angular/angular/security/advisories/GHSA-w739-gvwx-grc3 VENDOR security-advisories@github.com