[UPDATE] [high] Keycloak: Multiple vulnerabilities

highCVE-2026-11800 CVE-2026-9083 CVE-2026-9086 CVE-2026-9099 CVE-2026-9705 CVE-2026-9799

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

vendor: Keycloak product: Keycloak Information disclosure Cross-site scripting Authentication bypassOther

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.

⚡ Watch Keycloak

Get an email when a new Keycloak advisory drops — max one per day, one-click unsubscribe.

Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-07-09
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-2026-2093

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-2026-118000.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.
Low exploitation riskCVE-2026-90830.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all scored CVEs.
Low exploitation riskCVE-2026-90860.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all scored CVEs.
Low exploitation riskCVE-2026-90990.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.
Low exploitation riskCVE-2026-97050.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all scored CVEs.
Low exploitation riskCVE-2026-97990.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.
Low exploitation riskCVE-2026-98000.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all 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.

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.

medium[UPDATE] [medium] Keycloak (admin-ui-ext): Vulnerability allows file manipulationcert-bund · 2026-07-09
medium[UPDATE] [medium] Keycloak: Multiple vulnerabilitiescert-bund · 2026-07-09
medium[NEW] [UNPATCHED] [medium] Keycloak: Multiple vulnerabilitiescert-bund · 2026-07-06
criticalCVE-2026-53913: Improper Authentication, Missing Authentication for Critical Function, Not Failing Securely ('…nvd · 2026-07-06
criticalCVE-2026-46455: Insufficient Session Expiration vulnerability in Apache Camel Keycloak Component. The camel-ke…nvd · 2026-07-06
mediumCVE-2026-14615: A flaw was found in the Fine-Grained Admin Permissions (FGAP) v2 implementation within Keycloa…nvd · 2026-07-03