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VulnerabilityPublished Updated

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

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Not known to be exploited · CVSS 4.2 Medium.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 3.1 base score
4.2Medium
How severe the flaw is on the 0–10 CVSS scale.
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Red Hat JBoss Enterprise Application Platform 8.1.8.GAorg.wildfly.security/wildfly-elytron-realm-tokenAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-activemq-artemisAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-apache-cxfAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-artemis-wildfly-integrationAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-bouncycastleAffected–Fixed in–
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10eap8-cryptacularAffected–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

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