CVE-2026-58270— Sync-in Server has a ReDoS via Unsanitized Regex in Sync Diff `pathFilters`
一分钟漏洞结论
影响对象
Sync-in server
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。
Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, the sync diff endpoint compiles a user-supplied string into a with no complexity validation. A catastrophic-backtracking pattern (e.g. ) bl
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一、 漏洞 CVE-2026-58270 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
Sync-in Server has a ReDoS via Unsanitized Regex in Sync Diff `pathFilters`
来源: CVE Program / CVE List V5
Vulnerability Description
Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, the sync diff endpoint compiles a user-supplied string into a `RegExp` with no complexity validation. A catastrophic-backtracking pattern (e.g. `^(a+)+b`) blocks the Node.js event loop, making the entire server unresponsive to all users until the container is restarted. Version 2.4.0 patches the issue.
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
CWE-1333
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-58270 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-58270 其他参考 (1)
-
https://github.com/Sync-in/server/security/advisories/GHSA-jx63-h26r-8cph x_refsource_CONFIRM
同批安全公告 · Sync-in · 2026-09-21 · 共 4 条
| CVE-2026-58269 | 8.1 HIGH | Sync-in Server has a complete 2FA Bypass via `POST /api/auth/token` |
| CVE-2026-58271 | 6.8 MEDIUM | @sync-in/server vulnerable to TOTP Brute-Force via `POST /api/app/sync/register` |
| CVE-2026-58272 | 5.3 MEDIUM | Sync-in Server has Username/Login Enumeration via Timing Side-Channel on POST /api/auth/lo |
IV. Related Vulnerabilities
V. Comments for CVE-2026-58270
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