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OpenAdvisories
High · 7.0 CVE-2026-44793 EUVD-2026-78351GHSA-fhrq-3gmx-p879

OpenAM: Pre-authentication Reflected XSS in SAML2 Cluster Cookie-Hash-Redirect Path via `FSUtils.postToTarget`

Published Sep 15, 2026 · Updated Sep 15, 2026 · Assigned by GitHub_M

Description

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, certain federation endpoints in a non-default clustered configuration inconsistently encode user-supplied parameters rendered into HTML in the SAML2 cluster cookie-hash redirect path. An unauthenticated attacker can induce a user to follow a crafted request and execute script in the OpenAM origin. 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-library < 16.1.1 16.1.1 GHSA-fhrq-3gmx-p879

References