Cross-site scripting in Grav CMS - CVE-2026-42611
Published: May 5, 2026
Vulnerability identifier: #VU130088
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-42611
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Grav CMS
Affected software:
Grav CMS
Grav CMS
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary script in an administrator's browser and disclose sensitive information.
The vulnerability exists due to cross-site scripting in the admin/pages/ endpoint when processing page content containing injected svg elements. A remote user can create a crafted page to execute arbitrary script in an administrator's browser and disclose sensitive information.
User interaction is required when an administrator visits the attacker-controlled page.
How to mitigate CVE-2026-42611
Install security update from vendor's website.