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TI-2026-34989 Aliases CVE-2026-47426GHSA-f2cx-463q-7m2c

OpenAM OAuth Client Impersonation via JWKS Resolver Cache

Priority MEDIUM 40CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00554 46th percentileScored 2026-11-07
Fix Fixed OpenAM (OpenIdentityPlatform): 16.1.1org.openidentityplatform.openam:openam-oauth2 (Maven): 16.1.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenIdentityPlatformOpenAMbefore 16.1.116.1.1Patch availableCNA
—org.openidentityplatform.openam:openam-oauth2 (Maven)before 16.1.116.1.1Patch availableGHSA-f2cx-463q-7m2c
  • OpenAM VendorOpenIdentityPlatform Affected before 16.1.1 Fixed in 16.1.1 Patch available CNA
  • org.openidentityplatform.openam:openam-oauth2 (Maven) Vendor— Affected before 16.1.1 Fixed in 16.1.1 Patch available GHSA-f2cx-463q-7m2c

Remediation

  • Fix · CNA OpenAM (OpenIdentityPlatform) Fixed in 16.1.1
  • Fix · GHSA-f2cx-463q-7m2c org.openidentityplatform.openam:openam-oauth2 (Maven) Fixed in 16.1.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47426
  2. 2026-10-03 Alias added: GHSA-f2cx-463q-7m2c
  3. 2026-10-28 3 new references · GHSA-f2cx-463q-7m2c

References

Advisory 1

Other 4

  • TI-2025-20332 OpenDJ Denial of Service (Dos) using alias loop CVSS 4.0HIGH 8.7
  • TI-2026-25836 Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM CVSS 4.0CRITICAL 9.3
  • TI-2026-86693 Session token disclosure in OpenAM notification WebSocket CVSS 4.0CRITICAL 10.0
  • TI-2026-86692 Authentication bypass in OpenAM SAML login accepts unsigned assertions CVSS 4.0CRITICAL 9.3
  • TI-2026-86691 Privilege escalation in OpenAM via self-registration attribute bypass CVSS 4.0CRITICAL 9.3
  • TI-2026-86685 Unbounded Java deserialization in OpenAM enables denial of service CVSS 4.0HIGH 8.7
See all 54 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences