CVE-2025-34045

WeiPHP Path Traversal Arbitrary File Read

State: Published
Severity: 8.7 High
Published: Jun 26, 2025
Updated: Nov 29, 2025
Reserved: Apr 15, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	VulnCheck

Weaknesses

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

Affected Products

Product	Versions
WeiPHPShenzhen Yuanmengyun Technology Co., Ltd.	5.0Affected

References

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

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