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High · CVSS 8.3CVE-2026-45049GHSA-R9PV-5RPP-VM8G

OpenAM Unauthenticated Session Hijacking via Information Exposure in CDCServletCVE-2026-45049

Answer in brief

CVE-2026-45049 records a High severity (CVSS 8.3) vulnerability in OpenAM Unauthenticated Session Hijacking via Information Exposure in CDCServlet. The current sources do not mark it as known exploited. The current feed maps org.openidentityplatform.openam:openam-federation (maven), org.openidentityplatform.openam:openam-federation (maven). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 23, 2026Updated Oct 28, 2026Source checked Oct 28, 2026First seen by HOL Jun 23, 2026Material review Oct 28, 2026
Upstream Advisory

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-201
Source
GitHub Security Advisories
Source checked
Oct 28, 2026
References
5 linked sources
Open source record

Key facts

Risk
High · CVSS 8.3
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps org.openidentityplatform.openam:openam-federation (maven), org.openidentityplatform.openam:openam-federation (maven). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
org.openidentityplatform.openam:openam-federationmaven<=16.0.616.1.1
org.openidentityplatform.openam:openam-federationmaven>=0 <16.1.116.1.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for org.openidentityplatform.openam:openam-federation, org.openidentityplatform.openam:openam-federation.
  2. 2Review the reported fix. Update org.openidentityplatform.openam:openam-federation to 16.1.1; org.openidentityplatform.openam:openam-federation to 16.1.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jun 23, 2026

    Evidence: source:ghsa:source_dates:source-dates:record

  2. Source modified

    Oct 28, 2026

    Evidence: source:ghsa:source_dates:source-dates:record

  3. First seen by HOL

    Jun 23, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

## 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.

Quoted source text, attributed separately from HOL analysis.