CVE-2026-82980
一分钟漏洞结论
影响对象
Nextcloud Files Lock
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。
Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This
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一、 漏洞 CVE-2026-82980 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
N/A
来源: CVE Program / CVE List V5
Vulnerability Description
Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables:
Cross-user manual locks : attacker locks a victim's files, blocking writes (PUT/MOVE/DELETE, editor saves).
Lock-token disclosure: the app returns the lock token to unauthorized callers, enabling them to remove token-based locks (client locks) of other users.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Nextcloud | Files Lock | 31.0.0 ~ 33.0.0 | - |
|
二、漏洞 CVE-2026-82980 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
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CVE-2026-82980 其他参考 (1)
同批安全公告 · Nextcloud · 2026-09-18 · 共 7 条
| CVE-2026-77169 | Nextcloud团队文件夹应用权限绕过漏洞 | |
| CVE-2026-77170 | Deck配置API越权设置任意看板配置漏洞 | |
| CVE-2026-77164 | Nextcloud Circles盲SSRF漏洞 | |
| CVE-2026-82982 | CVE-2026-82982 | |
| CVE-2026-82985 | CVE-2026-82985 | |
| CVE-2026-68493 | CVE-2026-68493 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-82980
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