Description
textview_uri_security_check in textview.c in Claws Mail before 3.18.0, and Sylpheed through 3.7.0, does not have sufficient link checks before accepting a click.
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | claws-mail | 3.18.0-1 | — |
| Debian 13 | claws-mail | 3.18.0-1 | — |
| Debian 13 | sylpheed | 3.8.0~beta1-2+deb13u1 | — |
| Debian 12 | claws-mail | 3.18.0-1 | — |
| Debian 12 | sylpheed | 3.8.0~beta1-1+deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | claws-mail | No fix yet | — |
| Ubuntu 26.04 LTS | claws-mail | No fix yet | — |
| Ubuntu 25.10 | sylpheed +1 | No fix yet | — |
| Ubuntu 24.04 LTS | sylpheed +1 | No fix yet | — |
| Ubuntu 22.04 LTS | sylpheed +1 | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | sylpheed +1 | No fix yet | — |
| Ubuntu 18.04 LTS | sylpheed +1 | No fix yet | — |
| Ubuntu 16.04 LTS | sylpheed +1 | No fix yet | — |
References
- https://git.claws-mail.org/?p=claws.git%3Ba=commit%3Bh=ac286a71ed78429e16c612161251b9ea90ccd431
- https://sylpheed.sraoss.jp/sylpheed/v3.7/sylpheed-3.7.0.tar.xz
- https://claws-mail.org/download.php?file=releases/claws-mail-3.18.0.tar.xz
- FEDORA-2021-a4e9c45f9e vendor-advisory
- FEDORA-2021-3823463b9a vendor-advisory