Vulnerability · Published Oct 6, 2026 · Assigned by Chrome
CVE-2026-106331
Medium 6.5
In plain English
A medium-severity improper input validation 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 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.2%top 86.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper input validation in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to bypass web origin policy into a privileged page via a crafted Chrome extension. (Chromium security severity: Low)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 155.0.8059.39-1~deb12u1 | DEBIAN-CVE-2026-106331 |
| Debian:13 | chromium | 155.0.8059.39-1~deb13u1 | DEBIAN-CVE-2026-106331 |
| Debian:14 | chromium | 155.0.8059.39-1 | DEBIAN-CVE-2026-106331 |
Affected products (as reported)
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N