SB2026031771 - Security restrictions bypass in WebKitGTK+ and WPE WebKit
Published: March 17, 2026
Security Bulletin ID
SB2026031771
Severity
Medium
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Protection mechanism failure (CVE-ID: CVE-2026-20643)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient implementation of security measures within the Navigation API in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and bypass Same Origin Policy.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.