OpenAM <= 16.0.5 - Pre-Auth RCE via jato.clientSession Deserialization

Open Access Management OpenAM is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream...

CVE-2026-33439-Python-PoC

CVE-2026-33439 Python PoC Standalone Python proof of concept for the OpenAM pre-authentication remote code execution vulnerability in jato.clientSession deserialization. The embedded shaded Click/Xalan gadget reads a shell command from the cmd HTTP header and returns its output in the HTTP...

CVE-2026-33439-OpenAM

CVE-2026-33439 is a pre-auth unsafe deserialization issue in OpenAM 16.0.6 affecting JATO ViewBean endpoints. Public advisories mention JATO endpoints but do not enumerate reachable routes. This research identifies /openam/ui/PWResetUserValidation as a reachable pre-auth JATO endpoint...

CVE-2026-33439-PoC

CVE-2026-33439 — OpenAM Pre-Auth RCE Echo Mode Command output directly in the HTTP response — no DNS exfiltration or OOB needed. Uses com.iplanet.jato.RequestManager.getRequestContext to access the active JATO ThreadLocal request/response during deserialization. Works on Java 21+ where classic...

Exploit for Deserialization of Untrusted Data in Openidentityplatform Openam

CVE-2026-33439 — OpenAM Pre-Auth RCE Pre-authentication Remot...

CVE-2026-33439

Open Access Management OpenAM is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream...

CVE-2026-33439

Open Access Management OpenAM is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream...

CVE-2026-33439

Open Access Management OpenAM is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream...

CVE-2026-33439 Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM

Open Access Management OpenAM is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream...

CVE-2026-33439

CVE-2026-33439 : OpenAM/OpenIdentityPlatform before 16.0.6 is vulnerable to pre-authentication remote code execution via unsafe Java deserialization of the jato.clientSession parameter. An unauthenticated attacker can send a crafted serialized Java object to any JATO ViewBean endpoint (e.g., Pass...

CVE-2026-33439 Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM

Open Access Management OpenAM is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream...

OpenIdentityPlatform OpenAM: Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM

Summary OpenIdentityPlatform OpenAM 16.0.5 and likely earlier versions is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream mitigation that was applied to the...

GHSA-2CQQ-RPVQ-G5QJ OpenIdentityPlatform OpenAM: Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM

Summary OpenIdentityPlatform OpenAM 16.0.5 and likely earlier versions is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream mitigation that was applied to the...

EUVD-2026-19941

OpenIdentityPlatform OpenAM: Pre-Authentication Remote Code Execution via jato.clientSession Deserialization in OpenAM...

Deserialization of Untrusted Data

Overview Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the jato.clientSession HTTP parameter of the deserializeAttributes function. An attacker can execute arbitrary code on the server by sending a crafted serialized Java object to endpoints that process...

CVE-2026-33439: Deserialization of Untrusted Data

Open Access Management OpenAM is an access management solution. Prior to 16.0.6, OpenIdentityPlatform OpenAM is vulnerable to pre-authentication Remote Code Execution RCE via unsafe Java deserialization of the jato.clientSession HTTP parameter. This bypasses the WhitelistObjectInputStream...

OpenAM 代码问题漏洞

OpenAM is an integrated access management solution developed by the OpenAM Consortium. It provides authentication, authorization, and federation features. Versions of OpenAM prior to 16.0.6 have code vulnerabilities due to an insecure Java deserialization issue with the jato.clientSession...

PT-2026-30917

Name of the Vulnerable Software and Affected Versions OpenAM versions prior to 16.0.6 Description Open Access Management OpenAM is an access management solution. An unauthenticated attacker can achieve arbitrary command execution on the server through unsafe Java deserialization. This occurs when...

CVE-2021-35464

ForgeRock AM server before 7.0 has a Java deserialization vulnerability in the jato.pageSession parameter on multiple pages. The exploitation does not require authentication, and remote code execution can be triggered by sending a single crafted /ccversion/ request to the server. The vulnerabilit...

CVE-2021-35464: Deserialization of Untrusted Data

ForgeRock AM server before 7.0 has a Java deserialization vulnerability in the jato.pageSession parameter on multiple pages. The exploitation does not require authentication, and remote code execution can be triggered by sending a single crafted /ccversion/ request to the server. The vulnerabilit...