Description
A flaw has been found in YiFang CMS up to 2.0.5. This affects the function mergeMultipartUpload of the file app/utils/base/plugin/P_file.php. This manipulation of the argument File causes unrestricted upload. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
References (5)
Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.321236
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.321236
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.632535
Broken Link related
https://github.com/August829/Yu/blob/main/20250811_3.md
Broken Link exploit
https://github.com/August829/Yu/blob/main/20250811_3.md#poc
Scores
CVSS v3
6.3
EPSS
0.0007
EPSS Percentile
20.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-284
CWE-434
Status
published
Products (1)
wanglongcn/yifang
< 2.0.5
Published
Aug 25, 2025
Tracked Since
Feb 18, 2026