Description
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a cross-site scripting vulnerability in the password plugin. Error text returned by a password driver was concatenated into the message presented to the user without HTML escaping, so a backend able to influence that text, such as the DirectAdmin API, could inject script into the Roundcube interface. Upstream fixed this in the commit “Fix XSS issue in handling of password driver error responses”, which escapes the driver message before display.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Roundcube | Webmail | 1.6.0 – < 1.6.20, 1.7.0 – < 1.7.5 | 1.6.20 |
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 | 1.6.20+dfsg-1 | — |
| Debian 13 | roundcube | 1.6.20+dfsg-0+deb13u1 | — |
| Debian 12 | roundcube | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | roundcube | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | roundcube | No fix yet | — |
| Ubuntu Pro 24.04 LTS | roundcube | No fix yet | — |
| Ubuntu Pro 22.04 LTS | roundcube | No fix yet | — |
| Ubuntu Pro 20.04 LTS | roundcube | No fix yet | — |
| Ubuntu Pro 18.04 LTS | roundcube | No fix yet | — |
| Ubuntu Pro 16.04 LTS | roundcube | No fix yet | — |
Advisories 1
- WID-SEC-2026-4043 Roundcube Webmail: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 5, 2026
References
- https://bugs.debian.org/1151279 issue-tracking third-party-advisory
- https://github.com/roundcube/roundcubemail/commit/16bbca70b668e85332f23333946a764865bead94 patch
- https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 vendor-advisory release-notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 release-notes patch
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 release-notes patch
- https://github.com/roundcube/roundcubemail/commit/94298856ee67ff7817cc4def2adb634be91e28c7 patch