[UPDATE] [high] Keycloak: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in Keycloak to present false information, disclose information, conduct a Cross-Site Scripting attack, bypass security precautions, and manipulate files.
CSIRTS triage
- What
- An attacker can exploit multiple vulnerabilities in Keycloak to present false information, disclose information, conduct a Cross-Site Scripting attack, bypass security precautions, and manipulate files.
- Who is affected
- Deployments of Keycloak are affected.
- Urgency
- Remediation is urgent due to the high severity and potential for significant impact.
- Action
- Update Keycloak to the latest version to mitigate these vulnerabilities.
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-2026-2093
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-2026-118000.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-90830.78% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 53% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-90860.78% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 53% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-90990.49% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-97050.46% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 38% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-97990.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-98000.63% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 48% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-11800 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9083 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9086 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9099 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9705 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9799 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-9800 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
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