Main Vulnerability Database Vulnerabilities #VU156217

State Issues in WebKitGTK+ and WPE WebKit - CVE-2026-86872

Published: October 20, 2026

Vulnerability identifier: #VU156217

CSH Severity: Medium

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-86872

CWE-ID: CWE-371

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to a logic issue in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and bypass implemented security restrictions.

Affected software

WebKitGTK+
WPE WebKit

How to mitigate CVE-2026-86872

Install updates from vendor's website.

External References

https://support.apple.com/en-us/149039

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