Medium severity · published Sep 18, 2026
CVE-2026-85511
Wildfly-elytron-realm-token: parameter injection in eap's elytron oauth2
4.2
CVSS
0.3%
EPSS
No
On KEV
Description
A flaw was found in EAP's Elytron. An EAP application whose security domain is backed by an Elytron token-realm with oauth2-introspection would allow parameter substitution due to missing URL encoding.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Data Grid 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Fuse 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat JBoss Enterprise Application Platform 8.1.8.GA · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Single Sign-On 7 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85511
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85511
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:70228
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:70229
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:70230
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:70277
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-85511
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2483140
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