Vulnerability · Published Mar 11, 2026 · Assigned by Chrome
CVE-2026-3921
High 8.8
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 0.4% (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 70.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use after free in TextEncoding in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | qt6-qtwebengine | 6.10.1-r10 | ALPINE-CVE-2026-3921 |
| Alpine:v3.24 | qt6-qtwebengine | 6.10.2-r8 | ALPINE-CVE-2026-3921 |
| Debian:12 | chromium | 146.0.7680.71-1~deb12u1 | DSA-6164-1 |
| Debian:12 | chromium | 146.0.7680.71-1~deb12u1 | DEBIAN-CVE-2026-3921 |
| Debian:13 | chromium | 146.0.7680.71-1~deb13u1 | DEBIAN-CVE-2026-3921 |
| Debian:13 | chromium | 146.0.7680.71-1~deb13u1 | DSA-6164-1 |
| Debian:14 | chromium | 146.0.7680.71-1 | DEBIAN-CVE-2026-3921 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H