CVE-2025-66200

Medium

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.

SeverityMedium

CVSS5.4

Exploit probability—

Product

Apache Http Server

PublishedDec 5, 2025

First seenDec 5, 2025

Weakness typeCWE-288CWE-288

How to fix

Update

apache http_server2.4.66 or later

Vendor advisories

httpd.apache.org/security/vulnerabilities_24.html

Affected products

Product	Affected versions	Fixed in
apache http_server	2.4.7 ≤ v < 2.4.66	2.4.66

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