CVE-2026-45051— OpenAM Pre-auth RCE via Java Deserialization in WebAuthn Authenticator Storage
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.
Open Access Management (OpenAM) 是一款访问管理解决方案。在 16.1.1 版本之前，WebAuthnAuthentication 会在未使用 ObjectInputFilter 的情况下，通过 从配置的用户属性中反序列化一个 对象图。利用此漏洞需要满足以下条件：WebAuthn 流程必须可达，且攻击者之前已通过委托管理、用户配置、目录访问、传统 REST 自助注册或不安全的配置，向该用户属性写入了受控数据。当这些非默认条件成立时，数据会在断言验证之前被反序列化，从而可能在应用服务器进
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I. Basic Information for CVE-2026-45051
Vulnerability Information
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Vulnerability Title
OpenAM Pre-auth RCE via Java Deserialization in WebAuthn Authenticator Storage
Source: CVE Program / CVE List V5
Vulnerability Description
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, WebAuthnAuthentication loads a serialized AuthenticatorImpl object graph from the configured userAttribute through loadAuthenticators without an ObjectInputFilter. Exploitation requires the WebAuthn flow to be reachable and an attacker to have previously written controlled data to that attribute through delegated administration, provisioning, directory access, legacy REST self-registration, or unsafe configuration. When those non-default conditions hold, the data is deserialized before assertion verification and can execute a classpath gadget in the application server 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:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OpenIdentityPlatform | OpenAM | < 16.1.1 | - |
|
II. Public POCs for CVE-2026-45051
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-45051 (1)
Vendor Advisories for CVE-2026-45051 (1)
Vendor Pages for CVE-2026-45051 (1)
Same Patch Batch · OpenIdentityPlatform · 2026-09-15 · 19 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-2026-46495 | 9.2 CRITICAL | OpenDJ Pre-Auth RCE via Java Deserialization in JMX RMI |
| CVE-2026-62263 | 9.2 CRITICAL | OpenAM: WebAuthn Java deserialization RCE via ObjectInputFilter depth>1 bypass |
| 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-2026-47426 | 7.6 HIGH | OpenAM OAuth Client Impersonation via JWKS Resolver Cache |
| 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-2026-46623 | 7.4 HIGH | OpenAM Account Takeover via Unverified Password Change in OAuth2 Module |
| CVE-2026-53660 | 7.4 HIGH | OpenAM Insecure SSO Cookie Initialization |
| 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-2026-47426
OpenAM OAuth Client Impersonation via JWKS Resolver Cache -
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
Same vendor: OpenIdentityPlatform
-
CVE-2026-46495
OpenDJ Pre-Auth RCE via Java Deserialization in JMX RMI -
CVE-2026-48717
OpenAM OAuth Authorization Bypass via PKCE Challenge -
CVE-2026-47426
OpenAM OAuth Client Impersonation via JWKS Resolver Cache -
CVE-2026-47424
OpenAM Authenticated RCE via Groovy Sandbox Escape -
CVE-2026-41573
OpenAM LDAP Injection via `_queryId` Parameter
Same weakness: CWE-502
-
CVE-2026-46495
OpenDJ Pre-Auth RCE via Java Deserialization in JMX RMI -
CVE-2026-62263
OpenAM: WebAuthn Java deserialization RCE via ObjectInputFil -
CVE-2026-45794
OpenAM Unsafe Java Deserialization via SNS -
CVE-2026-13293
IBM MQ Java messaging is vulnerable to remote code execution -
CVE-2026-67399
WHMCS 9.0.0-9.0.7/8.13.6及之前版本反序列化RCE
V. Comments for CVE-2026-45051
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