CVE-2026-101896

CVSS 8.2 (high) · published 2026-10-14

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.32, 21.2.24, and 22.2.0, the @angular/router URL parser stores numeric matrix parameter names and numeric outlet names as properties on initially empty JavaScript objects during Node.js server-side rendering. V8 can interpret these URL-derived keys as array indices and allocate dense backing stores sized to high numeric values, so repeated small path segments cause disproportionate per-segment heap consumption. An unauthenticated attacker can send overlapping requests containing repeated numeric matrix parameters when SSR is enabled, the router directly parses the request URL, and upstream proxies allow semicolons and multiple path segments, eventually exhausting the Node.js old-space heap and terminating the SSR worker. Pure client-side Angular applications are not affected. This issue is fixed in versions 20.3.32, 21.2.24, and 22.2.0.

Weakness: CWE-400, CWE-770

Source: NVD CVE-2026-101896

References

• https://github.com/angular/angular/commit/03872a80bcf1c89b2b04cdd3f444b2ee954da583
• https://github.com/angular/angular/commit/5af61216eab8bf4a6697a1d79bda3d857c06f89d
• https://github.com/angular/angular/commit/ddfe21072ba32ca4cd9d7d3c6b7df66af81d58c4
• https://github.com/angular/angular/issues/70716
• https://github.com/angular/angular/pull/70717
• https://github.com/angular/angular/releases/tag/v20.3.32
• https://github.com/angular/angular/releases/tag/v21.2.24
• https://github.com/angular/angular/releases/tag/v22.2.0
• https://github.com/angular/angular/security/advisories/GHSA-ff3f-86qr-9cv3

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.