CVE-2025-66200
httpd: Apache HTTP Server: mod_userdir+suexec bypass via AllowOverride FileInfo
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 5, 2025
Updated · October 16, 2026
Description
A permissions bypass flaw has been discovered in the apache HTTP server. Users with access to use the RequestHeader directive in htaccess can cause some CGI scripts to run under an unexpected userid.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE-305 · Authentication Bypass by Primary Weakness