[NEW] [UNPATCHED] [medium] Keycloak: Multiple vulnerabilities allow information disclosure

mediumCVE-2026-17048 CVE-2026-17059

A remote, authenticated attacker can exploit multiple vulnerabilities in Keycloak to disclose information.

CSIRTS triage

vendor: Keycloak product: Keycloak Information disclosure

What: Multiple vulnerabilities allow a remote, authenticated attacker to disclose information.
Who is affected: Authenticated users of Keycloak.
Urgency: Remediation is medium urgency as it could lead to unauthorized information exposure.
Action: Monitor for updates and apply patches as they become available.

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: 2026-07-27
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-2026-2517

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-2026-170480.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.
Low exploitation riskCVE-2026-170590.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-17048	coverage & exploitation status	NVD · CVE.org
CVE-2026-17059	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