CVE-2025-66200
Published: December 9, 2025Last modified: December 14, 2025
Description
mod_userdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP Server. Users with access to use the RequestHeader directive in htaccess can cause some CGI scripts to run under an unexpected userid. This issue affects Apache HTTP Server: from 2.4.7 through 2.4.65. Users are recommended to upgrade to version 2.4.66, which fixes the issue.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.4 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | LOW |
| Availability impact | LOW |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | apache2 | Fixed (2.4.66-r0) |
| 25 LTS | apache2 | Fixed (2.4.66-r0) | |
| Stream | apache2 | Fixed (2.4.66-r0) |