Vulnerability · Published Apr 8, 2026 · Assigned by Chrome
CVE-2026-5859
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 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.4%top 70.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Integer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Critical)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 147.0.7727.55-1~deb12u1 | DEBIAN-CVE-2026-5859 |
| Debian:13 | chromium | 147.0.7727.55-1~deb13u1 | DEBIAN-CVE-2026-5859 |
| Debian:14 | chromium | 147.0.7727.55-1 | DEBIAN-CVE-2026-5859 |
Affected products (as reported)
Weakness: CWE-472 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H