CVE-2026-111752
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, @angular/router in Node.js server-side rendering fails to require auxiliary outlet URL segments to match routes configured for their outlet names. Crafted requests containing multiple unconfigured empty-path outlet groups can repeatedly evaluate the route configuration, construct duplicate ActivatedRouteSnapshot trees, execute canMatch guards and resolvers, and copy route parameters and queryParams for each outlet. An unauthenticated remote attacker can exhaust the Node.js heap or CPU and terminate an SSR worker when SSR is enabled, a route level contains an empty-path route or named outlet, upstream infrastructure forwards the request target, and the worker has a constrained heap. The allocation is transient rather than a persistent leak, and client-side SPAs and build-time prerendering 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:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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/a83f8119acd466b524ae0113096ed188358d6d6c VENDOR security-advisories@github.com
- https://github.com/angular/angular/commit/b0d2ba0f54e21cb57ea5a0ca0d8e6065f28e23a0 VENDOR security-advisories@github.com
- https://github.com/angular/angular/commit/e9bf52aa03a3b9b302c33ffbc967ef0e1de5fb79 VENDOR security-advisories@github.com
- https://github.com/angular/angular/issues/70932 VENDOR security-advisories@github.com
- https://github.com/angular/angular/issues/70997 VENDOR security-advisories@github.com
- https://github.com/angular/angular/pull/71055 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-62vg-58rm-qff7 VENDOR security-advisories@github.com