Description
Directory traversal vulnerability in the set_skin function in program/include/rcmail_output_html.php in Roundcube before 1.0.8 and 1.1.x before 1.1.4 allows remote authenticated users with certain permissions to read arbitrary files or possibly execute arbitrary code via a .. (dot dot) in the _skin parameter to index.php.
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 | 1.1.4+dfsg.1-1 | — |
| Debian 13 | roundcube | 1.1.4+dfsg.1-1 | — |
| Debian 12 | roundcube | 1.1.4+dfsg.1-1 | — |
| Debian 7 | roundcube | 0.7.2-9+deb7u2 | DSA-3541-1 |
| Debian 6.0 | roundcube | 0.3.1-6+deb6u1 | DLA-392-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | roundcubemail | 1.2.3-1.1 | openSUSE-SU-2024:10491-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Roundcube Webmail 1.1.3 - Directory Traversal EDB-39245 · webapps · Jan 15, 2016
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- DLA-392-1 roundcube - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3541-1 roundcube - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10491-1 roundcubemail-1.2.3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- GLSA-201603-03 vendor-advisory
- DSA-3541 vendor-advisory
- http://trac.roundcube.net/changeset/10e5192a2b/github
- 20160113 Remote Code Execution in Roundcube mailing-list
- openSUSE-SU-2016:0214 vendor-advisory
- https://roundcube.net/news/2015/12/26/updates-1.1.4-and-1.0.8-released/
- openSUSE-SU-2016:0210 vendor-advisory
- http://trac.roundcube.net/ticket/1490620
- http://packetstormsecurity.com/files/135274/Roundcube-1.1.3-Path-Traversal.html
- 39245 exploit
- https://www.htbridge.com/advisory/HTB23283
- openSUSE-SU-2016:0213 vendor-advisory