CVE-2026-33007
httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 4, 2026
Updated · October 30, 2026
Description
A flaw was found in the mod_authn_socache module of httpd. This vulnerability allows an unauthenticated remote user to crash a child process due to a NULL pointer dereference when the server is operating in a caching forward proxy configuration.
Statement
This issue allows an unauthenticated remote attacker to cause a crash in a child process. However, the main parent process remains active and functional. Due to this reason, this flaw has been rated with a moderate severity.
This flaw only affects configurations with mod_authn_socache loaded and being used. This module can be disabled via the configuration file if its functionality is not being used.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Disabling mod_authn_socache and restarting httpd will mitigate this flaw.
CVSS / CWE
CVSS 3.1 · 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-476 · NULL Pointer Dereference