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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-44631

Apache HTTP Server: Heap Underflow in `ap_regname` via Signed Char Overflow

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Apache Software Foundation Apache HTTP Server

Default version status: unaffected

  • 2.4.0 to ≤ 2.4.67affected

References