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TI-2026-84798 Aliases CVE-2026-111752

Denial of service in Angular router during server-side rendering

Priority LOW 38CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.

Summary

Angular and the @angular/router npm package fail to require auxiliary outlet URL segments to match their configured routes during Node.js server-side rendering. Crafted requests with multiple unconfigured empty-path outlet groups repeatedly evaluate route configuration and allocate memory (CWE-400), so an unauthenticated remote attacker can exhaust the heap or CPU and terminate an SSR worker.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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.

Why it matters now

EPSS 0.00988 62nd percentileScored 2026-11-07
Fix Fixed angular (angular): 20.3.33, 21.2.25, 22.2.1@angular/router (npm): 22.2.1, 21.2.25, 20.3.33

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
angularangularup to 19.2.25; 20.0.0 to before 20.3.33; 21.0.0 to before 21.2.25; 22.0.0 to before 22.2.120.3.33, 21.2.25, 22.2.1Patch availableCNA
—@angular/router (npm)22.0.0 to before 22.2.122.2.1Patch availableGHSA-62vg-58rm-qff7
—@angular/router (npm)21.0.0 to before 21.2.2521.2.25Patch availableGHSA-62vg-58rm-qff7
—@angular/router (npm)20.0.0 to before 20.3.3320.3.33Patch availableGHSA-62vg-58rm-qff7
—@angular/router (npm)up to 19.2.25—No fix listedGHSA-62vg-58rm-qff7
  • angular Vendorangular Affected up to 19.2.25; 20.0.0 to before 20.3.33; 21.0.0 to before 21.2.25; 22.0.0 to before 22.2.1 Fixed in 20.3.33, 21.2.25, 22.2.1 Patch available CNA
  • @angular/router (npm) Vendor— Affected 22.0.0 to before 22.2.1 Fixed in 22.2.1 Patch available GHSA-62vg-58rm-qff7
  • @angular/router (npm) Vendor— Affected 21.0.0 to before 21.2.25 Fixed in 21.2.25 Patch available GHSA-62vg-58rm-qff7
  • @angular/router (npm) Vendor— Affected 20.0.0 to before 20.3.33 Fixed in 20.3.33 Patch available GHSA-62vg-58rm-qff7
  • @angular/router (npm) Vendor— Affected up to 19.2.25 Fixed in — No fix listed GHSA-62vg-58rm-qff7

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:angular:angular:*:*:*:*:*:*:*:*——angular
  • cpe:2.3:a:angular:angular:*:*:*:*:*:*:*:* Versions — — ·angular

Remediation

Upgrade Angular to 20.3.33, 21.2.25 or 22.2.1, and upgrade @angular/router to the matching fixed version of 20.3.33, 21.2.25 or 22.2.1. No fixed version is listed for @angular/router 19.2.25 and earlier.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA angular (angular) Fixed in 20.3.33, 21.2.25, 22.2.1
  • Fix · GHSA-62vg-58rm-qff7 @angular/router (npm) Fixed in 22.2.1 Advisory →
  • Fix · GHSA-62vg-58rm-qff7 @angular/router (npm) Fixed in 21.2.25 Advisory →
  • Fix · GHSA-62vg-58rm-qff7 @angular/router (npm) Fixed in 20.3.33 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 6 products
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Fuse 7

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-111752
  2. 2026-11-04 Affected versions changed · Red Hat
  3. 2026-11-04 CVSS score added · Red Hat
  4. 2026-11-05 Priority changed: MEDIUM → LOW

References

Other 12

  • TI-2026-74069 Infinite loop in Angular SSR HTML parser allows denial of service CVSS 4.0HIGH 8.7
  • TI-2026-60076 Angular: SSRF and Cross-Origin Credential Disclosure via URL Resolution Discrepancy in SSR CVSS 4.0HIGH 8.6
  • TI-2026-60080 Angular: SSR XSS via Unescaped <template> Content Across DocumentFragment Boundaries in Fallback Raw-Content Elements CVSS 4.0HIGH 8.6
  • TI-2026-60078 Angular: SSR XSS via Unescaped Processing Instruction (<?...?>) Nodes in Fallback Raw-Content Elements CVSS 4.0HIGH 8.6
  • TI-2025-38694 Server-Side Request Forgery (SSRF) in Angular SSR CVSS 4.0HIGH 8.7
  • TI-2026-22098 Angular SSR has an Open Redirect via X-Forwarded-Prefix CVSS 4.0MEDIUM 6.9
See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences