cvedb.io
CVE-2026-33439
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-04-07T21:17:17.407 · Last modified 2026-06-17T10:37:30.050

Summary

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 mitigation that was applied to the jato.pageSession parameter after CVE-2021-35464. An unauthenticated attacker can achieve arbitrary command execution on the server by sending a crafted serialized Java object as the jato.clientSession GET/POST parameter to any JATO ViewBean endpoint whose JSP contains <jato:form> tags (e.g., the Password Reset pages). This vulnerability is fixed in 16.0.6.

Affected products

openidentityplatform — openam

Does this affect you?

Add your gear to cvedb and we'll alert you only when openidentityplatform ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.