Improper Verification of Cryptographic Signature Affecting org.keycloak:keycloak-services package, versions [0, 26.7.1)
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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Test your applications- Snyk IDSNYK-JAVA-ORGKEYCLOAK-17139455
- published3 Jun 2026
- disclosed28 May 2026
- creditUnknown
Introduced: 28 May 2026
CVE-2026-9793 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-services to version 26.7.1 or higher.
Overview
org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services.
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the requestObjectSignatureAlg policy bypass during the processing of JWE-encrypted request objects containing raw JSON plaintext. An attacker can submit unauthorized claims by crafting specially formed JWE-encrypted request objects, potentially compromising data integrity within the OpenID Connect authorization flow.