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Vulnerabilities

Vulnerability · CVE-2025-34045

weiphp weiphp Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Published Jun 26, 2025 · catalog updated Jun 26, 2025 · Shenzhen Yuanmengyun Technology Co., Ltd WeiPHP

Patch now

CVE-2025-34045 is in the CISA known-exploited catalog. Confirm Shenzhen Yuanmengyun Technology Co., Ltd WeiPHP against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
4.20%
Remediation
Remediation guidance
Affected products
vendor Shenzhen Yuanmengyun Technology Co., Ltd WeiPHP

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 VulnCheck canary evidence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Shenzhen Yuanmengyun Technology Co., Ltd WeiPHPversion unspecified

How to fix CVE-2025-34045

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-34045 is in the CISA known-exploited catalog. Confirm Shenzhen Yuanmengyun Technology Co., Ltd WeiPHP against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 4.20%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 26, 2025 · VulnCheck KEV

    Detected

    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

  2. Jun 26, 2025 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2025-34045

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-34045

    30-day exploitation probability 4.2%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2025-34045

    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, wher

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.