CVE-2026-18963
An attacker can exploit multiple vulnerabilities in Keycloak to bypass security measures and thereby take over user accounts.
CSIRTS triage
- What
- Multiple vulnerabilities in Keycloak allow security mechanism bypass leading to unauthorized user account takeover.
- Who is affected
- Keycloak deployments running vulnerable versions.
- Urgency
- High severity; allows account takeover via authentication bypass.
- Action
- Apply Keycloak security patches for the five CVEs listed to prevent account compromise.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[NEW] [high] Keycloak: Multiple vulnerabilitiescert-bund · 2026-08-19
- criticalCVE-2026-18963: A flaw was found in the reset-credentials flow of the keycloak-services component, which is th…nvd · 2026-08-18
External references
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[](https://www.csirts.com/cve/CVE-2026-18963)