CVE-2026-59976
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.77%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.77% probability · 55th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22, CWE-73
- Source
- security-advisories@github.com
EPSS moved from 0.6% on 13 October 2026 to 0.8% on 26 October 2026.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.