ConvertX has Path Traversal that leads to Arbitrary File Write and Arbitrary Code Execution

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-66449
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-16 01:15:51 UTC
Updated2026-10-07 19:10:00 UTC
DescriptionConvertXis 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.007840000 probability, percentile 0.546430000 (date 2026-10-07)

Problem Types: CWE-22 | CWE-73 | CWE-434 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CWE-73 CWE-73: External Control of File Name or Path | CWE-434 CWE-434: Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application C4illin Convertx All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA C4illin ConvertX affected < 0.16.0 Not specified

References

ReferenceSourceLinkTags
github.com/C4illin/ConvertX/commit/550f472451755d095cf5802bc91f403e85b7129e [email protected] github.com Patch
github.com/C4illin/ConvertX/blob/4ae2aab66ace7cdcc14c5a16ecaaf2372b9ccbd... [email protected] github.com Product
github.com/C4illin/ConvertX/security/advisories/GHSA-cpww-gwgc-p72r 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Exploit, Vendor Advisory
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