CVE-2026-96260— Mattermost server missing request body size limit on plugin routes allows denial of service by an authenticated user
一分钟漏洞结论
影响对象
Mattermost Mattermost
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。
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to enforce a request body size limit during CSRF validation of plugin requests which allows an authenticated user to exhaust server memory and cause a denial of
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一、 漏洞 CVE-2026-96260 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
Mattermost server missing request body size limit on plugin routes allows denial of service by an authenticated user
来源: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to enforce a request body size limit during CSRF validation of plugin requests which allows an authenticated user to exhaust server memory and cause a denial of service via a large request body sent to a plugin endpoint.. Mattermost Advisory ID: MMSA-2026-00775
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Mattermost | Mattermost | 11.9.0 ~ 11.9.1 | - |
|
二、漏洞 CVE-2026-96260 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Mattermost · 2026-09-22 · 共 3 条
| CVE-2026-96259 | 5.5 MEDIUM | Mattermost server-side request forgery via OAuth endpoints configurable by a System Admini |
| CVE-2026-95666 | 4.3 MEDIUM | Unbounded post ID array in the bulk reactions endpoint allows denial of service |
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Same vendor: Mattermost
Same weakness: CWE-789
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V. Comments for CVE-2026-96260
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