Executive brief
OpenAM is an open-source access management platform used to secure web applications and services. A vulnerability in its push notification system allows an attacker to trick the server into running unauthorized code or performing unintended actions like file modification. This could lead to a complete system takeover or service disruption, though it requires the attacker to have a low-privileged user account to initiate the attack.
Technical details
A Deserialization of Untrusted Data (CWE-502) exists in the OpenAM Push Notification SNS callback resource. The vulnerability occurs when a REST route handling SNS push messages, which is accessible anonymously, falls back to a persistent CTS-stored predicate blob after an in-memory dispatcher entry expires. An attacker with low-privileged access can plant a malicious blob by initiating a Push Registration. When the server later processes this blob, it treats top-level keys as Java class names and passes them to Class.forName() before deserializing attacker-controlled JSON via Jackson. This provides a class-loading and construction primitive that can lead to remote code execution, file writes, or DoS depending on the classpath. The issue is patched in version 16.1.1.
Affected products
- OpenIdentityPlatform OpenAM Community Edition <= 16.0.6
Timeline
- 2026-06-25: advisory: GHSA-pp89-732f-3g8q published
- 2026-06-25: patched: Version 16.1.1 released