[NEW] [UNPATCHED] [medium] Keycloak: Multiple vulnerabilities allow bypassing of security measures
A remote, authenticated attacker can exploit multiple vulnerabilities in Keycloak to bypass security measures and manipulate data.
CSIRTS triage
- What
- Keycloak has multiple vulnerabilities that allow remote authenticated attackers to bypass security measures and manipulate data.
- Who is affected
- Authenticated users of Keycloak are affected.
- Urgency
- Remediation is medium urgency as the vulnerabilities are unpatched and could be exploited.
- Action
- Monitor for updates and apply patches when available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2573
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-2026-182010.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all scored CVEs.
- Low exploitation riskCVE-2026-182070.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-18201 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-18207 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
Recent advisories for 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.
- mediumCVE-2026-18218: A flaw was found in the TokenManager component of the Keycloak identity management service. Wh…nvd · 2026-07-31
- lowCVE-2026-18217: A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and …nvd · 2026-07-31
- mediumCVE-2026-18215: Keycloak provides a way to let users log in using Microsoft accounts while restricting access …nvd · 2026-07-31
- mediumCVE-2026-18214: Keycloak allows users to log in using Google accounts and can be configured to only allow user…nvd · 2026-07-31
- mediumCVE-2026-18211: A flaw was found in the secure-client-uris client policy executor within Keycloak core service…nvd · 2026-07-31
- lowCVE-2026-18209: A flaw was found in the keycloak-services component of Keycloak, which handles OpenID Connect …nvd · 2026-07-31
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