CVE-2026-45049 OpenAM Session Hijacking via CDSSO
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-45049?
CVE-2026-45049 is a high-severity vulnerability in OpenIdentityPlatform OpenAM, published on 29 Oct 2026.
Official 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.
Weakness: CWE-201
Which versions are affected by CVE-2026-45049?
2 open source packages ship an affected version, including org.openidentityplatform.openam:openam-federation.
| Package | Affected | Fixed in |
|---|---|---|
org.openidentityplatform.openam:openam-federation Maven | All versions | 16.1.1 |
org.openidentityplatform.openam:openam-federation Maven | All versions | 16.1.1 |
How do I fix CVE-2026-45049?
Upgrade org.openidentityplatform.openam:openam-federation to 16.1.1 or later.
Is CVE-2026-45049 being exploited?
There is no known exploitation of CVE-2026-45049 in the wild and no public exploit code.
Sources
Also known as GHSA-r9pv-5rpp-vm8g.