CVE-2026-59976
ConvertX is a self-hosted file conversion service
- Risk score
- 59/100
- CVSS
- 8.1 v3.1
- Exploit chance (30 days)
- 0.6%
- Published
- 12 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- ConvertX is a self-hosted file conversion service. Prior to 0.18.0, the ImageMagick converter uses the unsanitized convert_to parameter to construct an output path. If an authenticated user, or an unauthenticated user when ConvertX is configured to allow unauthenticated access, uploads an extensionless image and suppl…
- Affected
- See advisory
- Fix
- Upgrade the product to 0.18.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.1 high
References
- https://github.com/C4illin/ConvertX/commit/0965928949319e2839770fbf57a8337440d42630
- https://github.com/C4illin/ConvertX/pull/532
- https://github.com/C4illin/ConvertX/releases/tag/v0.18.0
- https://github.com/C4illin/ConvertX/security/advisories/GHSA-pvqw-vc5x-266j
- https://github.com/C4illin/ConvertX/security/advisories/GHSA-pvqw-vc5x-266j
Original description
ConvertX is a self-hosted file conversion service. Prior to 0.18.0, the ImageMagick converter uses the unsanitized convert_to parameter to construct an output path. If an authenticated user, or an unauthenticated user when ConvertX is configured to allow unauthenticated access, uploads an extensionless image and supplies directory traversal sequences in convert_to through /convert, the constructed path escapes the intended output directory, allowing the attacker to write converted output to arbitrary container paths, potentially overwriting files or causing denial of service. This issue is fixed in version 0.18.0.
Last activity 12 Oct 2026. Patch Forecast updates every hour.