CVE-2026-123539— OpenAM before 16.1.4 Stored XSS via OAuth 2.0 Consent Page Display Name

Quick assessment

Affected

OpenIdentityPlatform OpenAM

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenAM 16.1.4 之前的版本存在存储型跨站脚本（Stored XSS）漏洞。该漏洞允许拥有特权的攻击者通过在用户的显示名称中插入恶意标记来注入脚本。当受害者访问 OAuth 2.0 / OpenID Connect 同意页面时，未经编码的用户名会被执行，从而运行脚本以窃取 OpenAM 会话 Cookie，进而冒充该用户。

CVSS 4.8 · Medium Updated Nov 08, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

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

Source: CVE Program / CVE List V5

Vulnerability Description

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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
OpenIdentityPlatform	OpenAM	0 ~ 16.1.4	-

II. Public POCs for CVE-2026-123539

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-123539

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Other References for CVE-2026-123539 (2)

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

https://www.cve.org/CVERecord?id=CVE-2026-123539

Same Patch Batch · OpenIdentityPlatform · 2026-11-08 · 18 CVEs total

CVE-2026-123551	10.0 CRITICAL	OpenAM 14.0.0 before 16.1.4 Session Token Disclosure via Notification WebSocket
CVE-2026-123550	9.8 CRITICAL	OpenAM before 16.1.4 SAML Authentication Bypass via Unsigned Assertions
CVE-2026-123549	9.8 CRITICAL	OpenAM before 16.1.4 Privilege Escalation via Self-Registration Attribute Bypass
CVE-2026-123543	7.5 HIGH	OpenAM before 16.1.4 Unauthenticated DoS via Unbounded Java Deserialisation
CVE-2026-123545	7.1 HIGH	OpenAM 14.5.1 before 16.1.4 CSRF in OAuth 2.0 Device Flow
CVE-2026-123544	6.8 MEDIUM	OpenAM before 16.1.4 Insufficient Response Validation in Internal SOAP Channel
CVE-2026-123542	6.8 MEDIUM	OpenAM before 16.1.4 PKCE Bypass in OAuth 2.0 Device Authorization Flow
CVE-2026-123538	6.6 MEDIUM	OpenAM before 16.1.4 SAML 1.x Signature Verification Issuer Impersonation
CVE-2026-123552	6.5 MEDIUM	OpenAM before 16.1.4 SSRF and CRL Tampering via Certificate CRL Distribution Point
CVE-2026-123553	6.5 MEDIUM	OpenAM before 16.1.4 Default Credentials in Built-in Accounts Allow Unauthenticated Login
CVE-2026-123546	6.1 MEDIUM	OpenAM before 16.1.4 Open Redirect and XSS via goto and gotoOnFail
CVE-2026-123537	5.0 MEDIUM	OpenAM before 16.1.4 SSRF via UMA Scope Description URLs
CVE-2026-123541	4.7 MEDIUM	OpenAM before 16.1.4 Open Redirect via SAML 1.x Trusted-Partner Matching
CVE-2026-123548	4.7 MEDIUM	OpenAM before 16.1.4 Open Redirect via WS-Federation and SAML v2.0 Pages
CVE-2026-123547	4.7 MEDIUM	OpenAM before 16.1.4 Open Redirect via SAML v2.0 RelayState
CVE-2026-123536	4.1 MEDIUM	OpenAM before 16.1.4 SSRF via Federation Configuration Wizard Metadata URLs
CVE-2026-123540	2.0 LOW	OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST

IV. Related Vulnerabilities

Same product: OpenAM

Same vendor: OpenIdentityPlatform

Same weakness: CWE-79