CVE-2025-3891 is a denial-of-service vulnerability in the mod_auth_openidc module for Apache httpd, impacting various Apache, Debian, and Red Hat distributions. A remote, unauthenticated attacker can trigger a server crash by sending an empty POST request when the OIDCPreservePost directive is enabled. This flaw has a high CVSS score of 7.5, indicating a network-based attack with low complexity and high impact on availability. There is currently no public exploit code, active exploitation, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:apache:http_server:-:*:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | ||
11.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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