SUSE · security update for mod_auth_openidc
Affects SUSESource GCVE Database
Not known to be exploited.
Data as of 25 Oct 2026, 19:02 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 1.5% chance of exploitation in 30 days – higher than 75% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| SUSE Product Security Team SUSE | Affected
| Fixed in– |
AI-suggested
Red Hat has released security updates that fix this vulnerability. Users should apply the updated mod_auth_openidc packages provided for Red Hat Enterprise Linux 9 and its Extended Update Support and Extended Life Cycle variants. Refer to Red Hat advisory RHSA-2025:9396 and the update instructions at https://access.redhat.com/articles/11258 for detailed remediation steps.
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.
References
- access.redhat.com/errata/RHSA-2025:10002 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:10003 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:10004 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:10006 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:10007 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:10008 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:10010 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:4597 (opens in a new tab)
- access.redhat.com/errata/RHSA-2025:9396 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2025-3891 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2361633 (opens in a new tab)
- github.com/OpenIDC/mod_auth_openidc/commit/6a0b5f66c87184dfe0e4400f6bdd46a82dc0ec2b (opens in a new tab)
- github.com/OpenIDC/mod_auth_openidc/security/advisories/GHSA-x7cf-8wgv-5j86 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/05/msg00007.html (opens in a new tab)
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/rhsa-2025_9396.json (opens in a new tab)
- lists.suse.com/pipermail/suse-liberty-linux-updates/2025-June/001695.html (opens in a new tab)
- suse.com/security/cve/CVE-2025-3891/ (opens in a new tab)