Summary
OpenAM Unauthenticated Session Hijacking via Information Exposure in CDCServlet
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.
CVE-2026-45049 has a CVSS score of 8.3 (High). The vector is network-reachable, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (16.1.1); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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This has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.
Frequently Asked Questions
- What is CVE-2026-45049? CVE-2026-45049 is a high-severity security vulnerability in org.openidentityplatform.openam:openam-federation (maven), affecting versions <= 16.0.6. It is fixed in 16.1.1.
- How severe is CVE-2026-45049? CVE-2026-45049 has a CVSS score of 8.3 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of org.openidentityplatform.openam:openam-federation are affected by CVE-2026-45049? org.openidentityplatform.openam:openam-federation (maven) versions <= 16.0.6 is affected.
- Is there a fix for CVE-2026-45049? Yes. CVE-2026-45049 is fixed in 16.1.1. Upgrade to this version or later.
- Is CVE-2026-45049 exploitable, and should I be worried? Whether CVE-2026-45049 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-45049 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-45049? Upgrade
org.openidentityplatform.openam:openam-federationto 16.1.1 or later.