CVE-2026-3939
MEDIUMCVSS 5.3/10EPSS 0.15%
Last modified
CVE-2026-3939 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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). EPSS estimates a 0.15% chance of exploitation in the next 30 days.
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)
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Chrome | < 146.0.7680.71 |
References
- https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_10.htmlRelease Notes, Vendor Advisory
- https://issues.chromium.org/issues/40058077Permissions Required
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-3939?
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)
How severe is CVE-2026-3939?
CVE-2026-3939 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.
How do I fix CVE-2026-3939?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-3939?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST