CVE-2026-33523

medium Apache
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Published: May 4, 2026 (9 days ago)
Last Modified: May 4, 2026
Vendor: Apache
Source: NVD

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.

CWE

CWE-443

Affected Products

apache http server

References

🔗 httpd.apache.org 🔗 www.openwall.com