CVE-2026-11998 is a high-severity vulnerability in Google AngularJS's Strict Contextual Escaping (SCE) mechanism. The flaw involves incomplete filtering of special elements in resource URLs, where the logic that matches entire URLs against regular expressions can be bypassed by partial matches. This allows unsafe values to be used as resource URLs, which can lead to arbitrary JavaScript execution within the context of the victim's browser session. The vulnerability affects AngularJS version 1.2.0-rc.3. Since AngularJS is end-of-life, no official fixes or patches are available.

Successful exploitation can lead to arbitrary JavaScript execution in the victim's browser, potentially compromising confidentiality, integrity, and availability of the affected web application and user data. The CVSS score of 7.6 reflects a high impact with network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, high confidentiality impact, low integrity impact, and low availability impact.

No official fix or patch is available because AngularJS is end-of-life and will not receive updates. Users should consider migrating to supported frameworks or versions that do not have this vulnerability. Review application usage of AngularJS 1.2.0-rc.3 and avoid using untrusted resource URLs in security-sensitive contexts. Employ additional application-level controls to sanitize and validate URLs where possible.