CVE-2021-3717

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-05-24 · updated 2026-06-17
Weakness: CWE-552

Description

A flaw was found in Wildfly. An incorrect JBOSS_LOCAL_USER challenge location when using the elytron configuration may lead to JBOSS_LOCAL_USER access to all users on the machine. The highest threat from this vulnerability is to confidentiality, integrity, and availability. This flaw affects wildfly-core versions prior to 17.0.

Affected products

Red Hat JBoss EAP: 7.4, 7.3
Red Hat Single Sign-On: all versions
RedHat Wildfly Core: before 17.0 — fixed in 17.0

How to fix

Upgrade to a fixed version: RedHat Wildfly Core 17.0. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1991305
https://security.netapp.com/advisory/ntap-20220804-0002/
https://bugzilla.redhat.com/show_bug.cgi?id=1991305
https://security.netapp.com/advisory/ntap-20220804-0002/

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