VULNERABILITY INTELLIGENCE

CVE-2026-33523

CVSS score6.5 MEDIUM
EPSS probability0.44%
CISA KEVNot currently listed
Published2026-05-04
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

Weakness classification

  • security@apache.org: CWE-443
  • nvd@nist.gov: NVD-CWE-Other

Primary references