CVE-2025-3891 Information

Description

A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently affecting availability.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Reference

https://access.redhat.com/security/cve/CVE-2025-3891 https://bugzilla.redhat.com/show_bug.cgi?id=2361633

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

5.3