CVE-2026-93421— Mesop CSP报告端点无认证ANSI转义序列注入漏洞
一分钟漏洞结论
影响对象
mesop-dev mesop
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。
Mesop is a Python-based UI framework that allows users to build web applications. Prior to 1.3.4, the unauthenticated /__csp__ endpoint passes attacker-controlled document-uri, blocked-uri, and violated-directive values to the csp_report handler in mesop/serve
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一、 漏洞 CVE-2026-93421 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
Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP Reporting Endpoint
来源: CVE Program / CVE List V5
Vulnerability Description
Mesop is a Python-based UI framework that allows users to build web applications. Prior to 1.3.4, the unauthenticated /__csp__ endpoint passes attacker-controlled document-uri, blocked-uri, and violated-directive values to the csp_report handler in mesop/server/static_file_serving.py, which prints them to standard output without neutralizing terminal control sequences. When an operator views the resulting logs in an ANSI-capable terminal, injected ANSI or VT100 sequences can clear or reposition the display, hide text, or present forged messages, reducing the integrity of monitoring and incident-response output. This issue is fixed in version 1.3.4.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
日志输出的转义处理不恰当
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-93421 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
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CVE-2026-93421 其他参考 (4)
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https://github.com/mesop-dev/mesop/pull/1397 x_refsource_MISC
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https://github.com/mesop-dev/mesop/releases/tag/v1.3.4 x_refsource_MISC
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https://github.com/mesop-dev/mesop/security/advisories/GHSA-g7f6-rxc4-qhph x_refsource_CONFIRM
IV. Related Vulnerabilities
V. Comments for CVE-2026-93421
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