Vulnerability · Published Nov 3, 2026 · Assigned by Chrome
CVE-2026-121066
Unrated
In plain English
A incorrect authorization 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 7% of all known vulnerabilities).
Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 93.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Incorrect authorization in Extensions in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to bypass system access restrictions via a crafted Chrome extension. (Chromium security severity: Medium)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | no fix listed | DEBIAN-CVE-2026-121066 |
| Debian:13 | chromium | no fix listed | DEBIAN-CVE-2026-121066 |
| Debian:14 | chromium | no fix listed | DEBIAN-CVE-2026-121066 |
Affected products (as reported)
Weakness: CWE-863