CVE-2026-47426OpenAM OAuth Client Impersonation via JWKS Resolver Cache
Updated under an hour ago ()
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It affects OpenIdentityPlatform OpenAM. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the private_key_jwt client authentication path uses ClientJwksResolverCache without reliably binding a cached jwks_uri resolver and verified assertion to the expected clientID in ClientCredentialsReader. An attacker controlling any registered client with published keys, including one obtained through open dynamic registration when enabled, can authenticate as another client whose keys are exposed through jwks_uri and mint tokens in that client's name across realms in the same OpenAM process. This issue is fixed in version 16.1.1.
- CVSS
- 7.6 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OpenIdentityPlatform OpenAM openidentityplatform:openam (from the name) | before 16.1.1 | CNA record |
References
- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-f2cx-463q-7m2cx-refsource-confirm
- https://github.com/OpenIdentityPlatform/OpenAM/commit/91acaf499162097ec83bcd729275ba7a12e1bd21x-refsource-misc
- https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.