Improper Validation of Syntactic Correctness of Input Affecting org.keycloak:keycloak-saml-core package, versions [,26.6.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published24 May 2026
- disclosed19 May 2026
- creditUnknown
Introduced: 19 May 2026
CVE-2026-7307 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-saml-core to version 26.6.2 or higher.
Overview
org.keycloak:keycloak-saml-core is an Identity and Access Management plugin for Keycloak.
Affected versions of this package are vulnerable to Improper Validation of Syntactic Correctness of Input in the SAMLParser and SAML11ParserUtil code paths that handle SAML 1.1 assertions and protocol requests. An attacker can trigger a ParsingException and disrupt SAML request processing by supplying malformed SAML 1.1 XML, including unexpected text or invalid event sequences inside Assertion, AttributeQuery, AuthenticationQuery, or AuthorizationDecisionQuery elements.
Note: While the fix was back-ported to version 26.4.12, this version has not been published to Maven Central