CVE-2025-65082

Medium

Description

Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache HTTP Server through environment variables set via the Apache configuration unexpectedly superseding variables calculated by the server for CGI programs. This issue affects Apache HTTP Server from 2.4.0 through 2.4.65. Users are recommended to upgrade to version 2.4.66 which fixes the issue.

SeverityMedium

CVSS6.5

Exploit probability—

Product

Apache Http Server

PublishedDec 5, 2025

First seenDec 5, 2025

Weakness typeCWE-150CWE-150

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	2.4.0 ≤ v < 2.4.66	2.4.66

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