# CVE-2026-44793: Open Identity Platform OpenAM reflected XSS in SAML2 federation library

Source: https://junglewise.ai/threats/cve-2026-44793-open-identity-platform-openam-reflected-xss-in-saml2-federation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-06-22  
License: CC BY 4.0 with a link back

CVE-2026-44793 · Severity: medium · CVSS 4 · Published 2026-09-15

OpenAM, an open-source access management solution, contains a security flaw in its federation library. In certain clustered server environments, an attacker could trick a user's browser into executing malicious scripts. This could allow an attacker to perform actions on behalf of the user or steal session information without needing to log in first.

Technologies: [org.openidentityplatform.openam:openam-federation-library (Maven)](https://junglewise.ai/threats/technologies/org-openidentityplatform-openam-openam-federation-library), [Open Identity Platform OpenAM](https://junglewise.ai/threats/technologies/openam). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven), [Open Identity Platform](https://junglewise.ai/threats/vendors/open-identity-platform).

## Quick answers

**Is CVE-2026-44793 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-44793 being exploited in the wild.

**How severe is CVE-2026-44793?** Medium severity, with a CVSS score of 4, published 15 September 2026.

**Which products and versions are affected?** org.openidentityplatform.openam:openam-federation-library (Maven) < 16.1.1, ECOSYSTEM:introduced=0,fixed=16.1.1; Open Identity Platform OpenAM < 16.1.1.

**Is there a fix for CVE-2026-44793?** Yes. org.openidentityplatform.openam:openam-federation-library (Maven): upgrade to 16.1.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-44793 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-44793?** Check whether you run org.openidentityplatform.openam:openam-federation-library (Maven) or Open Identity Platform OpenAM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.openidentityplatform.openam:openam-federation-library (Maven): upgrade to 16.1.1 or later

  ```sh
  # set org.openidentityplatform.openam:openam-federation-library to 16.1.1 in your pom.xml or build.gradle
  ```


## Technical details

A reflected cross-site scripting (XSS) vulnerability exists in the OpenAM federation library within the SAML2 Cluster Cookie-Hash-Redirect path. The root cause is the inconsistent application of output encoding in the `FSUtils.postToTarget` method when rendering user-supplied parameters into HTML responses. This vulnerability is exploitable without authentication but requires a non-default configuration typically found in clustered deployments. An attacker can achieve script execution in the context of the victim's session by inducing a user to visit a specially crafted URL. The issue is addressed in version 16.1.1.

## Affected products

- Open Identity Platform OpenAM federation library < 16.1.1

## Identifiers

- CVE-2026-44793
- GHSA-fhrq-3gmx-p879

## Timeline

- 2026-06-22: disclosed
- 2026-06-22: advisory
- 2026-06-22: patched: Fixed in version 16.1.1

## References

- [https://api.github.com/users/gujjuboy10x00](https://api.github.com/users/gujjuboy10x00)
- [https://github.com/gujjuboy10x00](https://github.com/gujjuboy10x00)
- [https://api.github.com/users/gujjuboy10x00/gists%7B/gist_id%7D](https://api.github.com/users/gujjuboy10x00/gists%7B/gist_id%7D)
- [https://api.github.com/users/gujjuboy10x00/repos](https://api.github.com/users/gujjuboy10x00/repos)
- [https://avatars.githubusercontent.com/u/32534328?v=4](https://avatars.githubusercontent.com/u/32534328?v=4)
- [https://api.github.com/users/gujjuboy10x00/events%7B/privacy%7D](https://api.github.com/users/gujjuboy10x00/events%7B/privacy%7D)

## Related threats

- [OpenAM default credentials authentication bypass in built-in identities](https://junglewise.ai/threats/cve-2026-123553-openam-before-16-1-4-ships-built-in-identities-in-the-top-level)
- [OpenAM unauthenticated session token disclosure via WebSocket](https://junglewise.ai/threats/cve-2026-123551-openam-from-14-0-0-before-16-1-4-contains-an-information)
- [OpenAM SAML v2.0 service provider authentication bypass](https://junglewise.ai/threats/cve-2026-123550-openam-before-16-1-4-contains-an-authentication-bypass)
- [OpenAM self-registration attribute list enforcement bypass](https://junglewise.ai/threats/cve-2026-123549-openam-before-16-1-4-fails-to-enforce-the-valid-creation)
- [OpenAM open redirect via SAML RelayState](https://junglewise.ai/threats/cve-2026-123547-openam-before-16-1-4-contains-an-open-redirect-vulnerability)