Description
AppImage appimaged before 1.0.3 does not properly check whether a downloaded file is a valid appimage. For example, it will accept a crafted mp3 file that contains an appimage, and install it.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | libappimage | No fix yet | — |
| Ubuntu 26.04 LTS | libappimage | No fix yet | — |
| Ubuntu 25.10 | libappimage | No fix yet | — |
| Ubuntu 24.04 LTS | libappimage | No fix yet | — |
| Ubuntu 22.04 LTS | libappimage | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | libappimage | No fix yet | — |