7.5

CVE-2026-79651

Keycloak-services: keycloak-services: unauthenticated dos via unbounded locale caching

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them in a permanent in-memory cache without limits. An attacker can exploit this by sending a large number of unique locale tags, eventually causing the server to run out of memory and crash.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.4
Default Statusaffected
Version 26.4.16-2
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.4
Default Statusaffected
Version 26.4-26
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.4
Default Statusaffected
Version 26.4-26
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.4.16
Default Statusunaffected
HerstellerRed Hat
≫
Produkt Red Hat build of Keycloak 26.4.16
Default Statusunaffected
HerstellerRed Hat
≫
Produkt Red Hat build of Keycloak 26.4.16
Default Statusunaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.6
Default Statusaffected
Version 26.6.7-3
Version < *
Status unaffected
HerstellerRed Hat
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Produkt Red Hat build of Keycloak 26.6
Default Statusaffected
Version 26.6-20
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt Red Hat build of Keycloak 26.6
Default Statusaffected
Version 26.6-20
Version < *
Status unaffected
HerstellerRed Hat
≫
Produkt Red Hat build of Keycloak 26.6.7
Default Statusunaffected
HerstellerRed Hat
≫
Produkt Red Hat build of Keycloak 26.6.7
Default Statusunaffected
HerstellerRed Hat
≫
Produkt Red Hat build of Keycloak 26.6.7
Default Statusunaffected
HerstellerRed Hat
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Produkt Red Hat Single Sign-On 7
Default Statusunaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.62% 0.484
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

https://access.redhat.com/security/cve/CVE-2026-79651
https://bugzilla.redhat.com/show_bug.cgi?id=2523345
https://access.redhat.com/errata/RHSA-2026:68276
https://access.redhat.com/errata/RHSA-2026:68277
https://access.redhat.com/errata/RHSA-2026:68278
https://access.redhat.com/errata/RHSA-2026:68280