CVE-2026-85511: Red Hat JBoss Enterprise Application Platform 8.1.8.GA · Authentication Bypass by Spoofing
Affects Red Hat JBoss Enterprise Application Platform 8.1.8.GASource CVE Database V5
Not known to be exploited · CVSS 4.2 Medium.
Data as of 2 Nov 2026, 22:58 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 2 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform 8.1.8.GAorg.wildfly.security/wildfly-elytron-realm-token | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-activemq-artemis | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-apache-cxf | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-artemis-wildfly-integration | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-bouncycastle | Affected– | Fixed in– |
| Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-cryptacular | Affected– | Fixed in– |
AI-suggested
A security update for Red Hat JBoss Enterprise Application Platform 8.1.8 is available and should be applied to remediate this vulnerability. Before applying the update, ensure all previously released errata are applied and back up existing installations. Refer to Red Hat's official advisory (https://access.redhat.com/errata/RHSA-2026:70228) and update instructions (https://access.redhat.com/articles/11258) for detailed remediation guidance.
Description
CVE-2026-85511 is a medium severity vulnerability in Red Hat JBoss Enterprise Application Platform 8.1.8.GA affecting the Elytron security framework. The flaw allows parameter substitution due to missing URL encoding in an Elytron token-realm configured with oauth2-introspection, potentially enabling authentication bypass by spoofing. A security update addressing this issue is available from Red Hat.
References
- access.redhat.com/security/cve/CVE-2026-85511 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2483140 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70228 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70229 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70230 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:70277 (opens in a new tab)