Description
In Roundcube from versions 1.2.0 to 1.3.5, with the archive plugin enabled and configured, it's possible to exploit the unsanitized, user-controlled "_uid" parameter (in an archive.php _task=mail&_mbox=INBOX&_action=plugin.move2archive request) to perform an MX (IMAP) injection attack by placing an IMAP command after a %0d%0a sequence. NOTE: this is less easily exploitable in 1.3.4 and later because of a Same Origin Policy protection mechanism.
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 | roundcube | 1.3.6+dfsg.1-1 | — |
| Debian 13 | roundcube | 1.3.6+dfsg.1-1 | — |
| Debian 12 | roundcube | 1.3.6+dfsg.1-1 | — |
| Debian 9 | roundcube | 1.2.3+dfsg.1-4+deb9u2 | DSA-4181-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | roundcube | 1.2~beta+dfsg.1-0ubuntu1+esm7 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | roundcubemail | 1.4.11-1.3 | openSUSE-SU-2024:11303-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.10 | roundcubemail | 1.3.6-r0 | — |
| Alpine v3.9 | roundcubemail | 1.3.6-r0 | — |
| Alpine v3.8 | roundcubemail | 1.3.6-r0 | — |
| Alpine v3.7 | roundcubemail | 1.3.6-r0 | — |
Advisories 2
- DSA-4181-1 roundcube - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11303-1 roundcubemail-1.4.11-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026