Vulnerability Details CVE-2025-3891
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 26.6%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2025-3891
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cpe:2.3:a:apache:http_server:-
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cpe:2.3:o:debian:debian_linux:11.0
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cpe:2.3:o:redhat:enterprise_linux:7.0
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux:9.0