CVE-2026-85618 ConvertX 0.17.0 Arbitrary File Read via LaTeX Input Directives
Authenticated attackers can read arbitrary server files by uploading LaTeX files with input directives in ConvertX.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-85618?
CVE-2026-85618 is a high-severity path traversal vulnerability in C4illin ConvertX, published on 4 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-85618?
How do I fix CVE-2026-85618?
No fix has been published for CVE-2026-85618 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-85618 being exploited?
There is no known exploitation of CVE-2026-85618 in the wild and no public exploit code.
Sources
Also known as GHSA-g238-2mw5-49xx.