CVE-2026-15554
highthe Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication.
the Undertow AJP listener honours forged ssl_cert and is_ssl AJP attributes without requiring any shared-secret authentication. This enables an unauthenticated attacker with direct TCP access to port 8009 to bypass CLIENT-CERT authentication by injecting a forged X.509 certificate via the AJP protocol.
CVSS
7.4
7.4 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-08-11 09:17
Modified: 2026-11-01 01:17
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-11-03 07:34 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/errata/RHSA-2026:53644 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:53806 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:70228 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:70229 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:70230 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:70277 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-15554 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2480601 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:34 UTC · record ↗