CVE-2026-123802— SuperTokens Core SAML 身份冒充漏洞
一分钟漏洞结论
影响对象
supertokens supertokens-core
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。
SuperTokens Core 是一个开源认证服务器。在 11.3.0 至 11.3.8、11.4.8、12.0.11、12.1.2、12.2.1 和 12.3.1 版本中，若部署已启用许可并配置了 SAML 客户端，则系统可能接受未通过受众（audience）校验的断言（assertion）来认证用户身份。当身份提供者（IdP）使用断言级签名时，攻击者若同时持有：（1）一个仍有效、由 IdP 签名且将受害者作为目标但受众任意的断言，以及（2）一个自身有效且受众为目标的断言，便可将两者拼接利用。其原因是 函数仅从
影响版本矩阵 6
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| supertokens | supertokens-core | >= 11.3.0, < 11.3.8 |
affected |
>= 11.4.0, < 11.4.8 |
affected | ||
>= 12.0.0, < 12.0.11 |
affected | ||
>= 12.1.0, < 12.1.2 |
affected | ||
>= 12.2.0, < 12.2.1 |
affected | ||
>= 12.3.0, < 12.3.1 |
affected |
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一、 漏洞 CVE-2026-123802 基础信息
漏洞信息
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Vulnerability Title
SuperTokens Core SAML: identity taken from an assertion that never passed the audience check, allowing sign-in as any IdP user
来源: CVE Program / CVE List V5
Vulnerability Description
SuperTokens Core is an open source authentication server. From 11.3.0 until 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1, a licensed deployment with a configured SAML client can authenticate an identity from an assertion that did not satisfy the audience check. When the identity provider uses assertion-level signing, an attacker who has a still-valid IdP-signed assertion naming the victim for any audience and the attacker's own valid assertion for the target audience can combine them because validateSamlResponseAudience accepts an audience from one assertion while extractAllClaims takes the final NameID and attributes from another; response-level signing does not expose this multi-assertion variant. Independently, an assertion from an identity provider configured for the target deployment but issued to another SuperTokens deployment using the shared default saml_sp_entity_id can satisfy the target's audience check. Successful exploitation authenticates the attacker as the victim IdP user. This issue is fixed in versions 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1.
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 |
|---|---|---|---|---|
| supertokens | supertokens-core | >= 11.3.0, < 11.3.8 | - |
|
二、漏洞 CVE-2026-123802 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-123802 其他参考 (18)
-
https://github.com/supertokens/supertokens-core/releases/tag/v11.3.8 x_refsource_MISC
-
https://github.com/supertokens/supertokens-core/releases/tag/v12.3.1 x_refsource_MISC
-
https://github.com/supertokens/supertokens-core/releases/tag/v12.1.2 x_refsource_MISC
-
https://github.com/supertokens/supertokens-core/releases/tag/v11.4.8 x_refsource_MISC
-
https://github.com/supertokens/supertokens-core/releases/tag/v12.2.1 x_refsource_MISC
同批安全公告 · supertokens · 2026-11-09 · 共 8 条
| CVE-2026-123800 | 9.9 CRITICAL | SuperTokens Core 凭证覆盖及应用接管漏洞 |
| CVE-2026-123798 | 8.1 HIGH | SuperTokens Core SAML 认证绕过漏洞 |
| CVE-2026-123803 | 8.1 HIGH | SuperTokens Core WebAuthn 跨租户密钥验证漏洞 |
| CVE-2026-123797 | 7.5 HIGH | SuperTokens Core 租户路径绕过 API 密钥验证漏洞 |
| CVE-2026-123799 | 7.4 HIGH | SuperTokens Core 会话令牌未检查过期漏洞 |
| CVE-2026-123801 | 7.4 HIGH | SuperTokens Core SAML 回调重放导致令牌生成漏洞 |
| CVE-2026-123804 | 6.8 MEDIUM | SuperTokens Core 会话未清理漏洞 |