Description
A flaw was found in Wildfly. A remote unauthenticated attacker can trigger OutOfMemoryError as CSIv2Util's GSS token decoder reads an attacker-controlled length field without bounds checking and attempts to allocate a byte array of that size.
References8
- access.redhat.com/errata/RHSA-2026:53644
- access.redhat.com/errata/RHSA-2026:53806
- access.redhat.com/errata/RHSA-2026:70228
- access.redhat.com/errata/RHSA-2026:70229
- access.redhat.com/errata/RHSA-2026:70230
- access.redhat.com/errata/RHSA-2026:70277
- access.redhat.com/security/cve/CVE-2026-15567
- bugzilla.redhat.com/show_bug.cgi?id=2491620
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 60 · as of 12 November 2026
- CWE
- CWE-789
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.