CVE-2018-8011: Apache HTTP Server

High severity, CVSS 7.5. EPSS: 55.6% chance of exploitation in the next 30 days.

By specially crafting HTTP requests, the mod_md challenge handler would dereference a NULL pointer and cause the child process to segfault. This could be used to DoS the server. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.33).

Affected products

• Apache HTTP Server: version 2.4.33 only
• Netapp Cloud Backup: affected versions not specified

Published 2018-07-18. Last modified 2026-06-17.