Vulnerability · Published Jun 4, 2026 · Assigned by Chrome
CVE-2026-11212
Medium 4.3
In plain English
A medium-severity improper access control in Chrome from Google. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.1%top 96.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Insufficient policy enforcement in DevTools in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data via a crafted Chrome Extension. (Chromium security severity: Medium)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 149.0.7827.53-1~deb12u1 | DEBIAN-CVE-2026-11212 |
| Debian:13 | chromium | 149.0.7827.53-1~deb13u1 | DEBIAN-CVE-2026-11212 |
| Debian:14 | chromium | 149.0.7827.53-1 | DEBIAN-CVE-2026-11212 |
Affected products (as reported)
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N