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[NEW] [UNPATCHED] [low] RedHat Build of Keycloak: Vulnerability allows denial of service

lowCVE-2026-18569
A remote anonymous attacker can exploit a vulnerability in Keycloak to perform a denial of service attack.

CSIRTS triage

vendor: RedHatproduct: KeycloakDenial of service
What
A vulnerability allows remote anonymous attackers to perform denial of service attacks.
Who is affected
Keycloak deployments exposed to unauthenticated network access.
Urgency
Low severity denial of service; not currently exploited; no patch available.
Action
Monitor for patches and implement network-level rate limiting if needed.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
low
Published
2026-08-04
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2634

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-18569coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for RedHat Build of Keycloak

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-Bund (BSI) Security Advisories