High severity · published Sep 15, 2026
CVE-2026-44793
OpenAM: Pre-authentication Reflected XSS in SAML2 Cluster Cookie-Hash-Redirect Path via `FSUtils.postToTarget`
7.0
CVSS
0.6%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenAM · OpenIdentityPlatform
< 16.1.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44793
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44793
github.com
https://github.com/OpenIdentityPlatform/OpenAM/commit/2f5e9bf4c28a4c9e97ded6ebd75e4e1ec241c894
github.com
https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1
github.com
https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-fhrq-3gmx-p879
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