Vulnerability · Published Oct 30, 2026 · Assigned by Chrome
CVE-2026-76026
High 8.8
In plain English
A high-severity security flaw 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 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.2%top 94.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Origin validation error in Autofill in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 156.0.8078.79-1~deb12u1 | DEBIAN-CVE-2026-76026 |
| Debian:13 | chromium | 156.0.8078.79-1~deb13u1 | DEBIAN-CVE-2026-76026 |
| Debian:14 | chromium | 156.0.8078.79-1 | DEBIAN-CVE-2026-76026 |
Affected products (as reported)
Weakness: CWE-346 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H