Skip to content
OpenAdvisories
High · 8.3 CVE-2026-45049 EUVD-2026-113394GHSA-r9pv-5rpp-vm8g

OpenAM Session Hijacking via CDSSO

Published Oct 29, 2026 · Updated Nov 4, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
OpenIdentityPlatform OpenAM < 16.1.1 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS openam No fix yet —

Affected packages

EcosystemPackageAffectedFixedRecord
Maven org.openidentityplatform.openam:openam-federation < 16.1.1 16.1.1 GHSA-r9pv-5rpp-vm8g

References