CVE-2026-82984
Quick assessment
Affected
Nextcloud Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
当团队被配置为“对所有人可见”时，Web 界面会正确阻止非成员查看该团队（提示“您不是...的成员”），但资源 API 端点仍可直接调用，导致任何已认证的非成员都能枚举该团队内部的资源及其标识符。 此漏洞不会授予对已发现资源本身内容的访问权限，仅会暴露这些资源的存在、名称和标识符。
Possible ATT&CK Techniques 1 AI
T1087 · Account Discovery
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I. Basic Information for CVE-2026-82984
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
When a team was configured as "visible to everyone", the web UI correctly blocked non-members from viewing the team ("You are not a member of ..."), but the resources API endpoint could still be called directly, allowing any authenticated non-member to enumerate the team's internal resources and their identifiers.
This does not grant access to the contents of the discovered resources themselves, only their existence, names, and identifiers.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-82984
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Other References for CVE-2026-82984 (1)
Same Patch Batch · Nextcloud · 2026-10-27 · 9 CVEs total
| CVE-2026-87897 | Whiteboard SSRF 漏洞：泄露 JWT 并获读写权限 | |
| CVE-2026-77173 | LibreOffice 文件命名含#致敏感信息未标记 | |
| CVE-2026-77172 | 应用密码绕过敏感端点密码确认漏洞 | |
| CVE-2026-77167 | Nextcloud 未认证 federated share 端点拒绝服务漏洞 | |
| CVE-2026-77171 | 公共共享集体链接允许创建页面漏洞 | |
| CVE-2026-82983 | Tables 应用分享端点未验证权限导致信息泄露 | |
| CVE-2026-82986 | Tableau 用户可绕过管理员设置的分组链接共享限制。 | |
| CVE-2026-67400 | WOPI 配置信息泄露：缺失 Token 类型检查 |