CVE-2023-6841: Keycloak: amount of attributes per object is not limited and it may lead to dos

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-10 · updated 2026-06-17
Weakness: CWE-231

Description

A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values.

Affected products

Keycloak: all versions
Red Hat Single Sign-On: 7.0

References

https://access.redhat.com/security/cve/CVE-2023-6841
https://bugzilla.redhat.com/show_bug.cgi?id=2254714

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