CVE-2026-85226— MISP OnDemand 相关引擎访问控制缺失漏洞
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 的按需（OnDemand）关联引擎中存在一个授权缺陷：该引擎在计算关联时，仅依据匹配的属性值进行判断，而未应用与所关联属性和事件相关的分发级别、共享组、组织或其他访问控制限制。因此，经过身份验证的用户可能会收到涉及其无权访问的属性或事件的关联结果。 存在漏洞的关联收集路径未将请求用户纳入考虑。补丁修改了关联收集器，使其能够接收当前用户，并通过 MISP 现有的 授权逻辑过滤返回的属性标识符。该逻辑会根据实时数据，评估事件级、属性级、对象级、分发级以及共享组级的限制。 该问题还影响了依赖先前存储的关联数据的
可能的 ATT&CK 技术 1 AI
T1560 · Archive Collected Data
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一、 漏洞 CVE-2026-85226 基础信息
漏洞信息
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Vulnerability Title
MISP OnDemand Correlation Engine Missing Access Control Allows Disclosure of Restricted Correlations
来源: CVE Program / CVE List V5
Vulnerability Description
MISP contains an authorization flaw in the OnDemand correlation engine where correlations were calculated solely from matching attribute values without applying the distribution, sharing group, organization, or other access-control restrictions associated with the correlated attributes and events. As a result, an authenticated user could receive correlation results referring to attributes or events that the user was not authorized to access.
The vulnerable correlation collection path did not take the requesting user into account. The patch changes the correlation collector to accept the current user and filters the resulting attribute identifiers through MISP's existing fetchAttributesSimple() authorization logic, which evaluates event-, attribute-, object-, distribution-, and sharing-group-level restrictions against the live data.
The issue also affected paths relying on previously stored correlation data. Because the OnDemand engine does not maintain the stored correlation table, its denormalized access-control information could be stale. The patch therefore validates correlated attribute identifiers against the current ACLs before returning them and additionally applies normal event visibility conditions when retrieving related events.
An authenticated low-privileged user could exploit this issue by querying or creating attributes that correlate with restricted MISP content, potentially learning information about otherwise inaccessible events or attributes.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-85226 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
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CVE-2026-85226 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 空/无效凭据 LDAP 认证绕过漏洞 |
| CVE-2026-85236 | 8.8 HIGH | MISP cullEmptyEvents CSRF导致GET请求不可逆删除事件漏洞 |
| CVE-2026-85237 | 8.6 HIGH | 邮箱OTP验证缺少限流导致暴力破解认证 |
| CVE-2026-85221 | 7.6 HIGH | MISP默认禁用TLS验证致中间人攻击 |
| CVE-2026-85238 | 7.6 HIGH | MISP CustomAuth 认证会话固定导致的劫持漏洞 |
| CVE-2026-85239 | 7.1 HIGH | MISP 事件模板定义校验绕过致服务中断 |
| CVE-2026-85227 | 6.1 MEDIUM | MISP 反射型跨站脚本漏洞 |
| CVE-2026-85230 | 5.3 MEDIUM | MISP Dashboard 按钮部件 JavaScript 注入漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-85226
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