Description
steps/mail/func.inc in Roundcube before 1.3.8 has XSS via crafted use of <svg><style>, as demonstrated by an onload attribute in a BODY element, within an HTML attachment.
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 | 1.3.8+dfsg.1-1 | — |
| Debian 13 | roundcube | 1.3.8+dfsg.1-1 | — |
| Debian 12 | roundcube | 1.3.8+dfsg.1-1 | — |
| Debian 9 | roundcube | 1.2.3+dfsg.1-4+deb9u3 | DSA-4344-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | roundcube | 1.3.6+dfsg.1-1ubuntu0.1~esm7 | — |
| Ubuntu Pro 16.04 LTS | roundcube | 1.2~beta+dfsg.1-0ubuntu1+esm7 | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.10 | roundcubemail | 1.3.8-r0 | — |
| Alpine v3.9 | roundcubemail | 1.3.8-r0 | — |
| Alpine v3.8 | roundcubemail | 1.3.8-r0 | — |
Advisories 1
- DSA-4344-1 roundcube - security update Debian Security (DSA / DLA) · Mar 9, 2026