Vulnerability · Published Apr 8, 2026 · Assigned by Chrome
CVE-2026-5869
Medium 4.3
In plain English
A medium-severity heap buffer overflow 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 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.2%top 83.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 147.0.7727.55-1~deb12u1 | DEBIAN-CVE-2026-5869 |
| Debian:13 | chromium | 147.0.7727.55-1~deb13u1 | DEBIAN-CVE-2026-5869 |
| Debian:14 | chromium | 147.0.7727.55-1 | DEBIAN-CVE-2026-5869 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N