CVE-2015-3185: Apache HTTP Server

Medium severity, CVSS 4.3. EPSS: 16.3% chance of exploitation in the next 30 days.

The ap_some_auth_required function in server/request.c in the Apache HTTP Server 2.4.x before 2.4.14 does not consider that a Require directive may be associated with an authorization setting rather than an authentication setting, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging the presence of a module that relies on the 2.2 API behavior.

Affected products

• Apache HTTP Server: version 2.4.0 only; version 2.4.1 only; version 2.4.2 only; version 2.4.3 only; version 2.4.4 only; version 2.4.6 only; …
• Apple Mac OS X: version 10.10.4 only
• Apple Mac OS X Server: version 5.0.3 only
• Apple Xcode: version 7.0 only
• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.04 only

Published 2015-07-20. Last modified 2026-06-17.