Vulnerability · Published Aug 11, 2026 · Assigned by Chrome
CVE-2026-19558
High 7.5
In plain English
A high-severity use-after-free 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 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 81.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: High)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 151.0.7922.137-1~deb12u1 | DEBIAN-CVE-2026-19558 |
| Debian:13 | chromium | 151.0.7922.137-1~deb13u1 | DEBIAN-CVE-2026-19558 |
| Debian:14 | chromium | 151.0.7922.137-1 | DEBIAN-CVE-2026-19558 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H