CVE-2026-85237— MISP 授权问题漏洞
一分钟漏洞结论
影响对象
misp misp
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。
MISP是MISP组织开源的一套开源的软件解决方案。该产品用于收集、存储、分发、共享网络安全指标,并具有威胁网络安全事件分析和恶意软件分析等功能。 MISP 2.5.45及之前版本存在授权问题漏洞，该漏洞源于邮件一次性密码（OTP）验证流程中的email_otp()端点未应用暴力破解保护，导致攻击者可进行无限制的OTP验证尝试，可能绕过附加身份验证因素，造成未授权访问受影响用户账户。
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一、 漏洞 CVE-2026-85237 基础信息
漏洞信息
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Vulnerability Title
Missing Rate Limiting in Email OTP Verification Allows Brute-Force Authentication Bypass
来源: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in MISP's email-based one-time password (OTP) authentication flow allowed an attacker to perform an unrestricted number of OTP verification attempts.
The email_otp() endpoint did not apply brute-force protection when validating submitted OTP values. An attacker who had reached the OTP verification stage, for example after successfully providing a user's primary authentication credentials, could repeatedly submit candidate OTP values while the same OTP remained valid. This significantly increased the feasibility of guessing the OTP and bypassing the additional authentication factor, potentially resulting in unauthorized access to the affected user's account.
The issue was exacerbated by the fact that the OTP is associated with the user rather than with an individual pending login session, allowing multiple concurrent sessions to attempt guesses against the same valid OTP.
The patch integrates the existing MISP brute-force protection mechanism into the email OTP flow. Failed OTP attempts are now counted against the user, further attempts are rejected once the configured threshold is reached, and the active OTP is invalidated when the attempt budget is exhausted. Blocklisted users are also prevented from requesting the generation of a fresh OTP. In addition, OTP comparison now uses hash_equals() and validates that the submitted value is a string.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:L/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
MISP 授权问题漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
MISP是MISP组织开源的一套开源的软件解决方案。该产品用于收集、存储、分发、共享网络安全指标,并具有威胁网络安全事件分析和恶意软件分析等功能。 MISP 2.5.45及之前版本存在授权问题漏洞，该漏洞源于邮件一次性密码（OTP）验证流程中的email_otp()端点未应用暴力破解保护，导致攻击者可进行无限制的OTP验证尝试，可能绕过附加身份验证因素，造成未授权访问受影响用户账户。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-85237 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-85237 补丁与修复 (1)
同批安全公告 · misp · 2026-09-03 · 共 9 条
| CVE-2026-85216 | 9.5 CRITICAL | MISP 授权问题漏洞 |
| CVE-2026-85236 | 8.8 HIGH | MISP 跨站请求伪造漏洞 |
| CVE-2026-85221 | 7.6 HIGH | MISP 加密问题漏洞 |
| CVE-2026-85238 | 7.6 HIGH | MISP 会话机制问题漏洞 |
| CVE-2026-85239 | 7.1 HIGH | MISP 输入验证错误漏洞 |
| CVE-2026-85227 | 6.1 MEDIUM | MISP 跨站脚本漏洞 |
| CVE-2026-85226 | 5.3 MEDIUM | MISP 授权问题漏洞 |
| CVE-2026-85230 | 5.3 MEDIUM | MISP 输入验证错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-85237
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