Vulnerability details

CVE-2025-34045

Shenzhen Yuanmengyun Technology WeiPHP

WeiPHP Path Traversal Arbitrary File Read

CVSS 4.0

8.7High

Official description

A path traversal vulnerability exists in WeiPHP 5.0, an open source WeChat public account platform development framework by Shenzhen Yuanmengyun Technology Co., Ltd. The flaw occurs in the picUrl parameter of the /public/index.php/material/Material/_download_imgage endpoint, where insufficient input validation allows unauthenticated remote attackers to perform directory traversal via crafted POST requests. This enables arbitrary file read on the server, potentially exposing sensitive information such as configuration files and source code. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-05 UTC.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`

Affected products

Vendor	Product	Versions	Source
Shenzhen Yuanmengyun Technology Co., Ltd.	WeiPHP	5.0	CVEProject cvelistV5 (CNA)

References and advisories

https://www.cnvd.org.cn/flaw/show/CNVD-2020-68596 third-party-advisory
https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2020/CNVD-2020-68596.yaml exploit
https://vulncheck.com/advisories/weiphp-path-traversal-file-read third-party-advisory

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Details

Published: 2025-06-26
Last updated: 2025-11-29
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

4.19%

Probability of exploitation in 30 days

90.9%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')