CVE Catalog

CVE-2026-101897

MediumCVSS 5.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.37%

30th percentile - higher than 30% of all known CVEs

Summary

Angular DevTools from 1.20.0 until 1.21.1 accepts chrome.runtime.sendMessage runtime messages from untrusted web pages or third-party content scripts without adequately verifying the message source. An attacker who obtains a valid randomized victim tabId can direct the extension to attach to another tab via chrome.debugger and trigger breakpoints, pausing JavaScript execution and preventing interaction with the target tab, without remote code execution or privilege escalation.

Risk Assessment

The vulnerability allows untrusted pages to disrupt the user's browser by pausing JavaScript execution on a chosen tab, which could be used for social engineering or denial of work.

Recommendation

Update the Angular DevTools extension to version 1.21.1 or later.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS