CVE-2025-66449

HIGH EPSS 47.5%
Published Dec 16, 20256mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Dec 16, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

Description

ConvertXis a self-hosted online file converter. In versions prior to 0.16.0, the endpoint `/upload` allows an authenticated user to write arbitrary files on the system, overwriting binaries and allowing code execution. The upload function takes `file.name` directly from user supplied data without doing any sanitization on the name thus allowing for arbitrary file write. This can be used to overwrite system binaries with ones provided from an attacker allowing full code execution. Version 0.16.0 contains a patch for the issue.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
47.5% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 3

CWE-22 Path Traversal Resource Mgmt
CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt
CWE-73

Affected Products 1

VendorProductVersionRange
c4illinconvertx* <0.16.0

References 3

  • github.com https://github.com/C4illin/ConvertX/blob/4ae2aab66ace7cdcc14c5a16ecaaf2372b9ccbdf/src/pages/upload.tsx#L27-L30
    Product
  • github.com https://github.com/C4illin/ConvertX/commit/550f472451755d095cf5802bc91f403e85b7129e
    Patch
  • github.com https://github.com/C4illin/ConvertX/security/advisories/GHSA-cpww-gwgc-p72r
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/C4illin/ConvertX/commit/550f472451755d095cf5802bc91f403e85b7129e
    Patch