CVE-2026-47426: OpenAM OAuth Client Impersonation via JWKS Resolver Cache
(updated )
Description
An Improper Authentication (CWE-287) issue in OpenAM’s OAuth2 private_key_jwt client authentication path allows any registered OAuth2 client to mint tokens in the name of any other client whose key is published via a jwks_uri, without knowing the victim’s signing key. This affects OpenAM Community Edition through version 16.0.6 and was patched in version 16.1.1.
References
- github.com/OpenIdentityPlatform/OpenAM/commit/91acaf499162097ec83bcd729275ba7a12e1bd21
- github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1
- github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-f2cx-463q-7m2c
- github.com/advisories/GHSA-f2cx-463q-7m2c
- nvd.nist.gov/vuln/detail/CVE-2026-47426
Code Behaviors & Features
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