TypeScript/JavaScript Development Platform Vulnerability in Angular
CVE-2026-101897

5.1MEDIUM

Key Information:

Vendor

Angular

Status
Angular
Devtools
Vendor
CVE Published:
14 October 2026

What is CVE-2026-101897?

The Angular platform, used for building web applications, has a vulnerability in the DevTools background service worker that accepts runtime messages from untrusted sources. This flaw can enable an attacker with a valid victim tabId to use the Chrome debugger to manipulate another browser tab, including pausing JavaScript execution and display debugging interactions. It does not allow for remote code execution or access to sensitive data, making it critical for developers to upgrade to version 1.21.1 or later to mitigate this risk.

Affected Version(s)

angular < 22.2.0-rc.0

DevTools >= 1.20.0, < 1.21.1

References

https://github.com/angular/angular/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/angular/angular/pull/70623
x_refsource_MISC
https://github.com/angular/angular/commit/7c053599c79a6dd...
x_refsource_MISC

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.