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CVE-2026-105116— OpenAM before 16.1.3 Latent XSS in SAML Load-Balancer Cookie Bounce Page

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.

在 OpenAM 16.1.3 之前的版本中存在一个潜在的跨站脚本（XSS）漏洞。该漏洞将 SAML 消息、中继状态（relay state）和目标 URL 以未编码的形式直接插入到负载均衡器的 Cookie 回弹自动提交页面中。如果系统启用了 cookieHashRedirectEnabled 配置选项，攻击者可以通过构造恶意请求在 OpenAM 原始域上下文中执行脚本。尽管在当前已发布版本中，一个无关的 HTTP 500 错误阻止了该漏洞的实际利用，但该缺陷仍然潜在存在。

CVSS 6.1 · Medium

Affected Version Matrix 6

VendorProduct Version RangeStatus
OpenIdentityPlatform OpenAM < 16.1.3 affected
16.1.3 unaffected
< 16.1.3 affected
16.1.3 unaffected
< 16.1.3 affected
16.1.3 unaffected
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I. Basic Information for CVE-2026-105116

Vulnerability Information
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Vulnerability Title
OpenAM before 16.1.3 Latent XSS in SAML Load-Balancer Cookie Bounce Page
Source: CVE Program / CVE List V5
Vulnerability Description
OpenAM before 16.1.3 contains a latent cross-site scripting defect that places the SAML message, relay state and target URL unencoded into the load-balancer cookie bounce auto-submit page. If reachable with cookieHashRedirectEnabled set, crafted requests could execute script in the OpenAM origin, though an unrelated HTTP 500 failure prevents exploitation in released versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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 ~ 16.1.3 -
OpenIdentityPlatform OpenAM 0 ~ 16.1.3 -
OpenIdentityPlatform OpenAM 0 ~ 16.1.3 -

II. Public POCs for CVE-2026-105116

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III. Intelligence Information for CVE-2026-105116

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Vendor Advisories for CVE-2026-105116 (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-2026-105122 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
CVE-2026-105118 4.7 MEDIUM OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession

IV. Related Vulnerabilities

Same product: OpenAM
Same vendor: OpenIdentityPlatform
Same weakness: CWE-79

V. Comments for CVE-2026-105116

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