Improper Authentication Affecting org.openidentityplatform.openam:openam-oauth2 package, versions [,16.1.1)
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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- published30 Jun 2026
- disclosed29 Jun 2026
- creditUnknown
Introduced: 29 Jun 2026
CVE-2026-47426 (opens in a new tab)How to fix?
Upgrade org.openidentityplatform.openam:openam-oauth2 to version 16.1.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Authentication via the private_key_jwt authentication process. An attacker can generate access tokens as another client by exploiting the JWKS resolver cache, without possessing the victim's signing key, if the target client has its key published via jwks_uri.