CVE-2026-24741: c4illin Convertx

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

ConvertXis a self-hosted online file converter. In versions prior to 0.17.0, the `POST /delete` endpoint uses a user-controlled `filename` value to construct a filesystem path and deletes it via `unlink` without sufficient validation. By supplying path traversal sequences (e.g., `../`), an attacker can delete arbitrary files outside the intended uploads directory, limited only by the permissions of the server process. Version 0.17.0 fixes the issue.

Affected products

• c4illin Convertx: before 0.17.0 (fixed in 0.17.0)

Published 2026-01-27. Last modified 2026-06-17.