[UPDATE] [medium] Keycloak: Multiple vulnerabilities

mediumCVE-2026-12388 CVE-2026-14209 CVE-2026-4629

A remote, authenticated attacker can exploit multiple vulnerabilities in Keycloak to obtain administrator rights, bypass security measures and disclose confidential information.

CSIRTS triage

vendor: Keycloak product: Keycloak Privilege escalation Authentication bypass Information disclosure

What: Multiple vulnerabilities in Keycloak allow authenticated attackers to gain administrator rights, bypass security measures, and access confidential information.
Who is affected: All Keycloak deployments requiring authenticated access are affected.
Urgency: Medium severity requiring authentication but resulting in administrator privilege escalation and information access.
Action: Update Keycloak to the patched version and audit user accounts and permission changes.

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: medium
Published: 2026-08-06
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-2026-2145

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.

Low exploitation riskCVE-2026-123880.40% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-142090.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-46290.49% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-12388	coverage & exploitation status	NVD · CVE.org
CVE-2026-14209	coverage & exploitation status	NVD · CVE.org
CVE-2026-4629	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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