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Advisory record · GHSA-fhrq-3gmx-p879

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

CVSS 7.0 HighEPSS 0.0059 · 48th percentile

Published by the GitHub Advisory Database at 22 Jun 2026, 20:39 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.openidentityplatform.openam:openam-federation-libraryMaven<16.1.116.1.1
Identifiers
GHSA-fhrq-3gmx-p879 · CVE-2026-44793
Weakness (CWE)
CWE-79
Tags
Published
22 Jun 2026
Updated
28 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Versions of the openam-federation-library Maven package before 16.1.1 are affected. Without authentication, an attacker can send a crafted request to certain federation endpoints that reflects script into the page, which runs in the OpenAM origin when a victim opens it, but only under a non-default clustered configuration. Upgrade to openam-federation-library 16.1.1 or later. The source gives few details on the exact trigger and no workaround is listed.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.0 High 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0059, the 48th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.