CVE-2026-5891

Name: CVE-2026-5891
Creator: NVD / NIST
Published: 2026-04-08T22:16:28.99+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2026-5891 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Insufficient policy enforcement in browser UI in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium). EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

Insufficient policy enforcement in browser UI in Google Chrome prior to 147.0.7727.55 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS Probability

0.21%

10.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-451

Affected Software

Vendor	Product	Versions
Google	Chrome	< 147.0.7727.55

References

https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
https://issues.chromium.org/issues/487471101Issue Tracking, Permissions Required

Timeline

Published: Apr 8, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5891?

How severe is CVE-2026-5891?

CVE-2026-5891 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5891?

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-2026-5891?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST