CVE-2026-47426— OpenAM OAuth Client Impersonation via JWKS Resolver Cache
Quick assessment
Affected
OpenIdentityPlatform OpenAM
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
以下是对该漏洞描述的专业翻译： Open Access Management（OpenAM）是一种访问管理解决方案。在 16.1.1 版本之前， 客户端认证路径中存在以下缺陷： 未能将缓存的 解析器和已验证的断言可靠地绑定到 中预期的客户端 ID。 如果攻击者能够控制某个已注册的客户端（包括通过启用开放动态注册获得的客户端），且该客户端的公钥已通过 公开，则攻击者可以冒充另一个其公钥也通过 暴露的客户端进行认证，并代表该客户端在不同域（realm）中签发令牌，这些域位于同一个 OpenAM 进程中。 该问题已在 1
Possible ATT&CK Techniques 3 AI
T1531 · Account Access Removal T1557 · Adversary-in-the-Middle T1078 · Valid Accounts
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I. Basic Information for CVE-2026-47426
Vulnerability Information
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Vulnerability Title
OpenAM OAuth Client Impersonation via JWKS Resolver Cache
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OpenIdentityPlatform | OpenAM | < 16.1.1 | - |
|
II. Public POCs for CVE-2026-47426
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-47426 (1)
Vendor Pages for CVE-2026-47426 (1)
Same Patch Batch · OpenIdentityPlatform · 2026-09-15 · 18 CVEs total
| CVE-2026-62379 | 9.8 CRITICAL | OpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCust |
| CVE-2026-46619 | 9.3 CRITICAL | OpenAM Authentication Bypass via MSISDN LDAP Injection |
| CVE-2026-45052 | 9.3 CRITICAL | OpenAM Pre-auth User Profile Tampering via Anonymous SOAP Authn in Liberty IDPP/Discovery |
| CVE-2026-62263 | 9.2 CRITICAL | OpenAM: WebAuthn Java deserialization RCE via ObjectInputFilter depth>1 bypass |
| CVE-2026-45051 | 9.2 CRITICAL | OpenAM Pre-auth RCE via Java Deserialization in WebAuthn Authenticator Storage |
| CVE-2026-48717 | 9.1 CRITICAL | OpenAM OAuth Authorization Bypass via PKCE Challenge |
| CVE-2026-45048 | 8.5 HIGH | OpenAM Authenticated Privilege Escalation via Raw Token Disclosure Session RPC |
| CVE-2026-44203 | 8.3 HIGH | OpenAM: Pre-auth Reflected XSS in OAuth2 / OIDC response_mode=form_post via state paramete |
| CVE-2026-45794 | 7.7 HIGH | OpenAM Unsafe Java Deserialization via SNS |
| CVE-2026-46498 | 7.6 HIGH | OpenAM Arbitrary OAuth Token Minting via Push Registration |
| CVE-2026-47424 | 7.5 HIGH | OpenAM Authenticated RCE via Groovy Sandbox Escape |
| CVE-2026-53660 | 7.4 HIGH | OpenAM Insecure SSO Cookie Initialization |
| CVE-2026-46623 | 7.4 HIGH | OpenAM Account Takeover via Unverified Password Change in OAuth2 Module |
| CVE-2026-41573 | 7.1 HIGH | OpenAM LDAP Injection via `_queryId` Parameter |
| CVE-2026-44793 | 7.0 HIGH | OpenAM: Pre-authentication Reflected XSS in SAML2 Cluster Cookie-Hash-Redirect Path via `F |
| CVE-2026-62280 | 6.1 MEDIUM | OpenAM Reflected XSS in the OAuth2/OIDC `wap` consent page |
| CVE-2026-44202 | 5.3 MEDIUM | OpenAM Authenticated Server-Side Request Forgery (SSRF) via `/sessionservice` |
IV. Related Vulnerabilities
Same product: OpenAM
-
CVE-2026-48717
OpenAM OAuth Authorization Bypass via PKCE Challenge -
CVE-2026-47424
OpenAM Authenticated RCE via Groovy Sandbox Escape -
CVE-2026-41573
OpenAM LDAP Injection via `_queryId` Parameter -
CVE-2026-62280
OpenAM Reflected XSS in the OAuth2/OIDC `wap` consent page -
CVE-2026-45051
OpenAM Pre-auth RCE via Java Deserialization in WebAuthn Aut
Same vendor: OpenIdentityPlatform
-
CVE-2026-48717
OpenAM OAuth Authorization Bypass via PKCE Challenge -
CVE-2026-47424
OpenAM Authenticated RCE via Groovy Sandbox Escape -
CVE-2026-41573
OpenAM LDAP Injection via `_queryId` Parameter -
CVE-2026-62280
OpenAM Reflected XSS in the OAuth2/OIDC `wap` consent page -
CVE-2026-45051
OpenAM Pre-auth RCE via Java Deserialization in WebAuthn Aut
Same weakness: CWE-287
-
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Kimai: Two-factor authentication bypass on the Kimai API -
CVE-2026-57148
praisonai-platform 0.1.4 still boots on the hardcoded JWT se -
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CVE-2026-90840
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CVE-2026-19273
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V. Comments for CVE-2026-47426
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