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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-33523

Apache HTTP Server: multiple modules: HTTP response splitting forwarding malicious status line

Description

HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised backend servers. This issue affects Apache HTTP Server: from through 2.4.66. Users are recommended to upgrade to version 2.4.67, 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 ≤ 2.4.66affected

References