CVE-2026-105080

Description

In ConvertX before 0.19.0, converters/calibre.ts does not block recipe files, and instead passes them to the ebook-convert program from Calibre. This affects executable code in a .recipe or .downloaded_recipe file.

CVSS Metrics

• v4.0•CRITICAL•Score: 9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
• v4.0•CRITICAL•Score: 9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
• v3.1•CRITICAL•Score: 9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.33%• Percentile: 24%

Techniques & Countermeasures

• CWE-829•Inclusion of Functionality from Untrusted Control Sphere

  The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere.

Affected Systems

• c4illin•convertx

  < 0.19.0

References (3)

• https://github.com/C4illin/ConvertX/releases/tag/v0.19.0
• https://github.com/C4illin/ConvertX/security/advisories/GHSA-m4hh-rqmf-c8hw
• https://github.com/C4illin/ConvertX/commit/0ca17dad7fa65e2e34823b59b95dd00bb1066b66