C4illin ConvertX up to 0.18.0 xelatex converter path traversal

Summaryinfo

A vulnerability labeled as problematic has been found in C4illin ConvertX up to 0.18.0. This impacts an unknown function of the component xelatex converter. The manipulation results in path traversal. This vulnerability is cataloged as CVE-2026-85618. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in C4illin ConvertX up to 0.18.0. It has been classified as problematic. Affected is an unknown part of the component xelatex converter. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. CVE summarizes:

ConvertX 0.17.0 contains an arbitrary file read vulnerability in the xelatex converter that allows authenticated users to read files by uploading LaTeX files with input directives. Attackers can upload .tex files containing \\input{path} or \\verbatiminput{path} directives to have the TeX engine read arbitrary files accessible to the server process and include them in downloadable PDF output.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-85618 since 09/04/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/04/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• C4illin

Name

• ConvertX

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18.0

Website

• Product: https://github.com/C4illin/ConvertX/

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