CVE-2026-105080 Code injection in ConvertX
Attackers can execute arbitrary code by providing malicious recipe files to the ConvertX library, which passes them unsafely to Calibre.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-105080?
CVE-2026-105080 is a critical code injection vulnerability in C4illin ConvertX, published on 3 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-829
Which versions are affected by CVE-2026-105080?
How do I fix CVE-2026-105080?
No fix has been published for CVE-2026-105080 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-105080 being exploited?
There is no known exploitation of CVE-2026-105080 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-6w7x-66x4-9w6v, GHSA-m4hh-rqmf-c8hw.