Missing Critical Step in Authentication Affecting org.apache.camel:camel-keycloak package, versions [4.15.0,4.18.5)[4.19.0,4.22.1)
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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- published22 Oct 2026
- disclosed19 Oct 2026
- creditClaude Security
Introduced: 19 Oct 2026
NewCVE-2026-85301 (opens in a new tab)How to fix?
Upgrade org.apache.camel:camel-keycloak to version 4.18.5, 4.22.1 or higher.
Overview
Affected versions of this package are vulnerable to Missing Critical Step in Authentication via the validateIssuerFromIntrospection function in the Keycloak security processor. An attacker can access routes protected by issuer validation using a token not minted by the configured issuer by presenting it when the introspection endpoint accepts tokens from multiple issuers but omits the iss claim. This requires issuer validation to be enabled and an introspection endpoint that omits iss; without the claim, the processor skips issuer validation and accepts the token.
Workarounds
- Configure the introspection endpoint to return the
issclaim and serve exactly one issuer, preventing issuer validation from being bypassed by a response with no issuer or one that could correspond to another issuer.