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CVE-2026-105118— OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession

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 16.1.3 之前的版本存在一个开放重定向漏洞，未身份验证的攻击者可以通过向 /oauth2/connect/endSession 端点提供未经验证的 id_token_hint 参数，重定向用户。攻击者可以在伪造的提示中指定任何领域的客户端，从而将受害者重定向到任何已注册的后登出 URI，这使得攻击者能够利用 OpenAM 主机的可信度进行网络钓鱼攻击。

CVSS 4.7 · Medium

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 2

VendorProduct Version RangeStatus
OpenIdentityPlatform OpenAM < 16.1.3 affected
16.1.3 unaffected
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I. Basic Information for CVE-2026-105118

Vulnerability Information
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Vulnerability Title
OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession
Source: CVE Program / CVE List V5
Vulnerability Description
OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified id_token_hint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered post-logout URI, enabling phishing that borrows the OpenAM host's trust.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenIdentityPlatform OpenAM 0 ~ 16.1.3 -

II. Public POCs for CVE-2026-105118

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III. Intelligence Information for CVE-2026-105118

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Vendor Advisories for CVE-2026-105118 (2)

Same Patch Batch · OpenIdentityPlatform · 2026-10-03 · 9 CVEs total

CVE-2026-105115 8.6 HIGH OpenAM before 16.1.3 Unauthenticated Arbitrary Class Instantiation via JAX-RPC Interface
CVE-2026-105119 6.8 MEDIUM OpenAM before 16.1.3 PKCE Enforcement Bypass via OAuth 2.0 Hybrid Flows
CVE-2026-105117 6.1 MEDIUM OpenAM before 16.1.3 Email Content Injection via Users REST Self-Service Actions
CVE-2026-105114 6.1 MEDIUM OpenAM before 16.1.3 Reflected XSS via OAuth2 Authorization Error Page
CVE-2026-105116 6.1 MEDIUM OpenAM before 16.1.3 Latent XSS in SAML Load-Balancer Cookie Bounce Page
CVE-2026-105122 5.4 MEDIUM OpenAM before 16.1.3 SSRF via OpenID Connect Client jwks_uri
CVE-2026-105120 4.9 MEDIUM OpenAM before 16.1.3 Cross-Realm Session Disclosure via Sessions REST Endpoint
CVE-2026-105121 4.9 MEDIUM OpenAM before 16.1.3 Improper Authorization in Delegated Session-Destroy Realm Scoping

IV. Related Vulnerabilities

Same product: OpenAM
Same vendor: OpenIdentityPlatform
Same weakness: CWE-347

V. Comments for CVE-2026-105118

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