CVE-2026-101897
Angular DevTools (Local DoS)
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | Medium5.1 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:H |
| NVDNVD · Awaiting Analysis | 4.0 | Medium5.1 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.35% · top 71% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.1.
Weakness
- CWE-346: Origin Validation Error (opens in a new tab)All about CWE-346 and its CVEs
- CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') (opens in a new tab)All about CWE-441 and its CVEs
- CWE-940: Improper Verification of Source of a Communication Channel (opens in a new tab)All about CWE-940 and its CVEs
Affected products
References (5)
- https://github.com/angular/angular/security/advisories/GHSA-r653-wxfp-pp9c (opens in a new tab)x_refsource_CONFIRM
- https://github.com/angular/angular/pull/70623 (opens in a new tab)x_refsource_MISC
- https://github.com/angular/angular/commit/7c053599c79a6ddd785a9bae33ff9fc7b355ea0d (opens in a new tab)x_refsource_MISC
- https://github.com/angular/angular/commit/cf492e8a372e2bbddb84987df12c33a52c23c72f (opens in a new tab)x_refsource_MISC
- https://github.com/angular/angular/commit/e02c4d89bcf5da9af499e0dfbba8c29206976ab3 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-101897)Record last updated .