CVE-2026-101897

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. From 1.20.0 until 1.21.1, the Angular DevTools background service worker accepts chrome.runtime.sendMessage runtime messages from untrusted web pages or third-party content scripts without adequately verifying the message source. An untrusted sender that obtains a valid randomized victim tabId can direct the extension to use chrome.debugger to attach to another browser tab and trigger Chrome DevTools Protocol breakpoints. This can display the debugging banner, pause JavaScript execution, and prevent interaction with the target tab, but it does not provide remote code execution, privilege escalation, or cross-origin access to memory or credentials. This issue is fixed in version 1.21.1.

CVSS

No CVSS.

References

Link	Resource
https://github.com/angular/angular/commit/7c053599c79a6ddd785a9bae33ff9fc7b355ea0d
https://github.com/angular/angular/commit/cf492e8a372e2bbddb84987df12c33a52c23c72f
https://github.com/angular/angular/commit/e02c4d89bcf5da9af499e0dfbba8c29206976ab3
https://github.com/angular/angular/pull/70623
https://github.com/angular/angular/security/advisories/GHSA-r653-wxfp-pp9c

Configurations

No configuration.

History

14 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 16:17

Updated : 2026-10-29 15:17

NVD link : CVE-2026-101897

Mitre link : CVE-2026-101897

CVE.ORG link : CVE-2026-101897

JSON object : View

Products Affected

No product.

CWE

CWE-346

Origin Validation Error

CWE-441

Unintended Proxy or Intermediary ('Confused Deputy')

CWE-940

Improper Verification of Source of a Communication Channel

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