CVE-2026-123539

MEDIUM 4.8

OpenAM before 16.1.4 Stored XSS via OAuth 2.0 Consent Page Display Name

CVSS Score

4.8

EPSS Score

0.0%

EPSS Percentile

0th

OpenAM before 16.1.4 contains a stored cross-site scripting vulnerability that allows privileged attackers to inject script by placing markup in a user's display name. When the victim reaches the OAuth 2.0 / OpenID Connect consent page, the unencoded name executes script that can steal the OpenAM session cookie to impersonate the user.

CWE	CWE-79
Vendor	openidentityplatform
Product	openam
Published	Nov 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

OpenIdentityPlatform / OpenAM

0 < 16.1.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-v6hq-3cfh-5gr6 vulncheck.com: https://www.vulncheck.com/advisories/openam-before-16.1.4-stored-xss-via-oauth-2.0-consent-page-display-name

Credits

vharseko maximthomas tsujiguchitky 🔍 manus-use