fkie_cve-2026-45049

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the `Cross-Domain Single Sign-On` (`CDSSO`) servlet allows a logged-in user's raw OpenAM session token to be POSTed to an attacker-controlled URL. An attacker who induces an authenticated victim to visit a crafted URL can receive the session credential and potentially hijack the session. Deployments must have `CDSSO` enabled, as is common in multi-domain deployments, and exploitation is additionally gated on a non-default configuration being absent. This issue is fixed in version 16.1.1.

GHSA-r9pv-5rpp-vm8g — OpenAM Unauthenticated Session Hijacking via Information Exposure in CDCServlet

Affected: Maven: org.openidentityplatform.openam:openam-federation

## Summary

**Description**

An Information Exposure Through Sent Data (CWE-201) issue in OpenAM's Cross-Domain Single Sign-On (CDSSO) servlet allows a logged-in user's raw OpenAM session token to be POSTed to an attacker-controlled URL. This impacts OpenAM Community Edition through version 16.0.6. This issue was patched in version 16.1.1.

An attacker who can induce a logged-in victim to visit a crafted URL may receive the victim's session credential, which could enable session hijacking.

## Impact OpenAM deployments through version 16.0.6 that have CDSSO enabled are potentially affected. The CDSSO component is commonly enabled in multi-domain deployments. Exploitation requires user interaction — an authenticated user must be induced to visit an attacker-crafted URL — and is further gated on a non-default configuration being absent.

## Patch This has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.

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fkie_cve-2026-45049

GHSA-r9pv-5rpp-vm8g — OpenAM Unauthenticated Session Hijacking via Information Exposure in CDCServlet