---
id: CVE-2026-45049
title: >-
  OpenAM Unauthenticated Session Hijacking via Information Exposure in
  CDCServlet
summary: >-
  OpenAM Unauthenticated Session Hijacking via Information Exposure in
  CDCServlet
severity: high
cvss: 8.3
cwe:
  - CWE-201
vendor: openidentityplatform
product: 'org.openidentityplatform.openam:openam-federation'
ecosystem: maven
affected:
  - 'org.openidentityplatform.openam:openam-federation <= 16.0.6'
patched:
  - 'org.openidentityplatform.openam:openam-federation 16.1.1'
published: '2026-06-23'
updated: '2026-06-23'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-r9pv-5rpp-vm8g'
references:
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-r9pv-5rpp-vm8g
  - url: 'https://github.com/advisories/GHSA-r9pv-5rpp-vm8g'
tags:
  - ghsa
  - maven
ingestedAt: '2026-06-29T13:24:35.460Z'
---

## Overview

## 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.

## Affected packages

- `org.openidentityplatform.openam:openam-federation <= 16.0.6`

## Remediation

Upgrade to a patched release:

- `org.openidentityplatform.openam:openam-federation 16.1.1`