CVE-2026-110863— Better Auth @better-auth/sso before 1.7.3 Authentication Bypass via Personal SSO Providers
一分钟漏洞结论
影响对象
better-auth sso
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Better Auth @better-auth/sso from 1.7.0-rc.2 before 1.7.3 contains an authentication bypass vulnerability that allows authenticated users to sign in as other users by registering a personal SSO provider. Attackers can copy a legitimate provider's OIDC issuer o
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一、 漏洞 CVE-2026-110863 基础信息
漏洞信息
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Vulnerability Title
Better Auth @better-auth/sso before 1.7.3 Authentication Bypass via Personal SSO Providers
来源: CVE Program / CVE List V5
Vulnerability Description
Better Auth @better-auth/sso from 1.7.0-rc.2 before 1.7.3 contains an authentication bypass vulnerability that allows authenticated users to sign in as other users by registering a personal SSO provider. Attackers can copy a legitimate provider's OIDC issuer or SAML entity ID and assert a victim's subject or NameID, because account lookup ignores providerId, creating sessions for victim accounts.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| better-auth | sso | 1.7.0-rc.2 ~ 1.7.3 | - |
|
二、漏洞 CVE-2026-110863 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-110863 其他参考 (2)
同批安全公告 · better-auth · 2026-10-14 · 共 4 条
| CVE-2026-110862 | 9.1 CRITICAL | Better Auth 1.4.0-beta.18 before 1.7.7 Authentication Bypass via Magic Link |
| CVE-2026-110864 | 7.4 HIGH | Better Auth 1.5.0-beta.12 before 1.7.7 Authentication Bypass via OAuth Proxy |
| CVE-2026-110861 | 3.7 LOW | Better Auth drizzle-adapter 1.6.17 before 1.7.7 Rate Limit Bypass via Race Condition |
IV. Related Vulnerabilities
Same vendor: better-auth
-
CVE-2026-110864
Better Auth 1.5.0-beta.12 before 1.7.7 Authentication Bypass -
CVE-2026-110862
Better Auth 1.4.0-beta.18 before 1.7.7 Authentication Bypass -
CVE-2026-110861
Better Auth drizzle-adapter 1.6.17 before 1.7.7 Rate Limit B -
CVE-2026-109346
better-auth 1.3.8-beta.3至1.7.0-rc.3设备授权钓鱼漏洞 -
CVE-2026-80192
Better Auth 授权问题漏洞
Same weakness: CWE-287
-
CVE-2026-110864
Better Auth 1.5.0-beta.12 before 1.7.7 Authentication Bypass -
CVE-2026-110862
Better Auth 1.4.0-beta.18 before 1.7.7 Authentication Bypass -
CVE-2026-104108
FileRise OIDC login can bind an attacker identity to an exis -
CVE-2026-104105
FileRise: TOTP codes are not single-use — valid 6-digit code -
CVE-2026-69191
FileRise: Login Method Restriction Bypass via Direct API Acc
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