What is CVE-2026-15554?

CVE-2026-15554 is a high-severity vulnerability in Red Hat Jboss Enterprise Application Platform 7, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-08-11.

How severe is CVE-2026-15554?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Red Hat Jboss Enterprise Application Platform 7

CVE-2026-15554

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 authenticati…

Vulnerability class: Improper Certificate Validation

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-15554?: CVE-2026-15554 is a high-severity vulnerability in Red Hat Jboss Enterprise Application Platform 7, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-08-11.
How severe is CVE-2026-15554?: High severity. CVSS v3 base score is 7.4 out of 10.