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CVE-2026-3047 is an authentication bypass vulnerability in Keycloak's org.keycloak.broker.saml component. The flaw occurs when a disabled SAML client is configured as the landing target for an Identity Provider-initiated broker login flow. Under that condition, the disabled client can still complete the login sequence and establish a Single Sign-On session even though the client is intended to be inaccessible. Once the SSO session is created, the attacker can access other enabled clients in the same realm without being forced to re-authenticate. The issue therefore breaks the expected enforcement of client disablement and allows security restrictions around brokered SAML login targets to be bypassed.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A separate Keycloak SAML broker authentication bypass vulnerability, mentioned only as background security history.
Authentication/authorization bypass in Keycloak SAML broker flow where a disabled SAML client can still be used as an IdP-initiated broker landing target to establish an SSO session, enabling unauthorized access to other enabled clients without re-authentication.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.