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CVE-2026-11998 Google CVE debrief

CVE-2026-11998 is a high-severity flaw in AngularJS' Strict Contextual Escaping (SCE) logic. This vulnerability allows bypassing certain SCE policies for resource URLs, which can lead to arbitrary JavaScript execution within the context of the victim's browser session. The SCE's purpose is to ensure that only trusted or safe values are used in certain security-sensitive contexts, such as resource URLs. A flaw in the logic that tries to match entire URLs against regular expression matchers can result in partial matches for certain types of regular expressions, effectively bypassing the policies and allowing the use of unsafe values as resource URLs. This issue affects AngularJS versions greater than or equal to 1.2.0-rc.3. The AngularJS project was already End-of-Life when this CVE was published and will not receive any updates to address this issue.

Vendor
Google
Product
AngularJS
CVSS
HIGH 7.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-24
Original CVE updated
2026-06-30
Advisory published
2026-06-24
Advisory updated
2026-06-30

Who should care

Developers and administrators using AngularJS, especially those who have not upgraded to a supported framework, should be aware of this vulnerability. Given that AngularJS is End-of-Life, organizations relying on it should prioritize migration to a supported alternative or implement compensating controls to mitigate the risk. Security teams should monitor for potential exploitation attempts and ensure that appropriate security measures are in place.

Technical summary

The vulnerability lies in the Strict Contextual Escaping (SCE) logic of AngularJS. SCE is designed to prevent the use of unsafe values in security-sensitive contexts. However, a flaw in the regular expression matching logic allows for partial matches, effectively bypassing SCE policies. This can lead to arbitrary JavaScript execution if an attacker can provide a crafted URL that is not properly sanitized. The issue is particularly concerning because AngularJS is no longer supported, leaving affected systems without official patches.

Defensive priority

High priority should be given to identifying and mitigating this vulnerability, especially in environments where AngularJS is still in use. Given the End-of-Life status of AngularJS, defenders should focus on compensating controls and migration strategies.

Recommended defensive actions

  • Immediately assess the presence of AngularJS in your environment and identify all affected systems.
  • Prioritize migration to a supported JavaScript framework to ensure continued security updates and support.
  • Implement compensating controls such as additional input validation, output encoding, and Content Security Policy (CSP) to mitigate the risk of exploitation.
  • Monitor for potential exploitation attempts and anomalous behavior in systems that historically used AngularJS.
  • Consider applying third-party security patches or community-supported updates if available.

Evidence notes

The CVE-2026-11998 details were obtained from the official CVE record and NVD. The vulnerability affects AngularJS versions greater than or equal to 1.2.0-rc.3. The AngularJS project has been End-of-Life, and no official patches are expected. Multiple references, including those from Herodevs and Red Hat, provide additional context and potential mitigations.

Official resources

This article is AI-assisted and based on the supplied source corpus.