Cross-site scripting in WordPress - #VU158603
Published: November 2, 2026
Vulnerability identifier: #VU158603
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary script in a victim's browser in the context of the affected WordPress site.
The vulnerability exists due to format string injection in the WordPress Categories block when passing a user-controlled string to sprintf() as its format string. A remote user can supply a crafted format string to inject script that executes when the affected content is rendered in a victim's browser.
Affected software
WordPress
Remediation
Install security update from vendor's website.
WordPress - addressed in versions 6.7.11, 6.8.12, 6.9.11, 7.0.8, 7.1.4