Vulnerability · Published Mar 11, 2026 · Assigned by Chrome
CVE-2026-3939
Medium 6.5
In plain English
A medium-severity improper access control 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)6.5Medium
Exploit odds (30 days)0.2%top 93.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Insufficient policy enforcement in PDF in Google Chrome prior to 146.0.7680.71 allowed a remote attacker to bypass navigation restrictions via a crafted PDF file. (Chromium security severity: Low)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 146.0.7680.71-1~deb12u1 | DEBIAN-CVE-2026-3939 |
| Debian:12 | chromium | 146.0.7680.71-1~deb12u1 | DSA-6164-1 |
| Debian:13 | chromium | 146.0.7680.71-1~deb13u1 | DEBIAN-CVE-2026-3939 |
| Debian:13 | chromium | 146.0.7680.71-1~deb13u1 | DSA-6164-1 |
| Debian:14 | chromium | 146.0.7680.71-1 | DEBIAN-CVE-2026-3939 |
Affected products (as reported)
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N