CVE-2026-101051— Cloudreve before 4.16.1 Path Traversal via Remote Download
Quick assessment
Affected
cloudreve cloudreve
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.
在 Cloudreve 4.16.1 之前的版本中，系统未能正确清理远程下载器返回的文件路径，导致经过身份验证的用户可以创建位于选定目标目录之外的文件。攻击者可通过在下载器元数据中利用路径遍历序列，将文件写入可访问命名空间内意料之外的位置。
Possible ATT&CK Techniques 1 AI
T1564.004 · NTFS File Attributes
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I. Basic Information for CVE-2026-101051
Vulnerability Information
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Vulnerability Title
Cloudreve before 4.16.1 Path Traversal via Remote Download
Source: CVE Program / CVE List V5
Vulnerability Description
Cloudreve before 4.16.1 fails to properly sanitize file paths returned by remote downloaders, allowing authenticated users to create files outside the selected destination directory. Attackers can exploit path traversal sequences in downloader metadata to write files to unexpected locations within accessible namespaces.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-101051
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-101051 (1)
Other References for CVE-2026-101051 (1)
Same Patch Batch · cloudreve · 2026-09-27 · 3 CVEs total
| CVE-2026-101048 | 5.4 MEDIUM | Cloudreve before 4.17.0 SSRF via Admin.Read OAuth scope |
| CVE-2026-101056 | 5.3 MEDIUM | Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint |
IV. Related Vulnerabilities
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CVE-2026-101056
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CVE-2026-101048
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Same vendor: cloudreve
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CVE-2026-101048
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CVE-2026-77633
Cloudreve: Storage-quota TOCTOU race allows quota bypass and -
CVE-2026-79913
Cloudreve: SSRF guard bypass: checkIP does not decode IPv6-t
Same weakness: CWE-22
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V. Comments for CVE-2026-101051
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