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Back to active CVEs
Medium · CVSS 5.1CVE-2026-101897

Angular DevTools (Local DoS)CVE-2026-101897

Answer in brief

CVE-2026-101897 records a Medium severity (CVSS 5.1) vulnerability in Angular DevTools (Local DoS). The current sources do not mark it as known exploited. The current feed maps angular/angular (generic), angular/DevTools (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 14, 2026Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.1
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps angular/angular (generic), angular/DevTools (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
angular/angulargeneric<22.2.0-rc.022.2.0-rc.0
angular/DevToolsgeneric>=1.20.0 <1.21.11.21.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for angular/angular, angular/DevTools.
  2. 2Review the reported fix. Update angular/angular to 22.2.0-rc.0; angular/DevTools to 1.21.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 14, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Angular: Denial of Service via Numeric URL Matrix Parameters in Server-Side Rendering (SSR)Same angular/angular package
  • Account pre-hijacking in the Prowler API through email based social account linking without verificationSame generic ecosystem
  • Nezha Monitoring: Whole-instance DoS in Nezha dashboard: a member can crash the process for every tenantSame generic ecosystem
  • Zulip: Guests can read new messages in non-subscribed public channelsSame generic ecosystem
  • OmniFaces: Forged combined-resource IDs and related output/push boundariesSame generic ecosystem
  • Zulip: OpenID Connect authentication ignores the email_verified claimSame generic ecosystem

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-346, CWE-441, CWE-940
Source
CVE List V5
Source checked
Oct 14, 2026
References
5 linked sources
Open source record