CVE-2026-44631

Critical

Description

Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.

SeverityCritical

CVSS9.8

Exploit probability—

Product

Apache Http Server

PublishedJun 8, 2026

First seenJun 8, 2026

Weakness typeCWE-124CWE-124

How to fix

Update

apache http_server2.4.68 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 < 2.4.68	2.4.68

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