AUGUST 4, 2026
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Case File

CVE-2025-3891

HIGH · CVSS 7.5 EPSS 1.42% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-04-29 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It affects Apache. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable. Exploitation may require the attacker to be authenticated. It may lead to a denial-of-service condition.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2025-3891
Severity
HIGH
CVSS
7.5
EPSS
1.42%
Apache

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)