Skip to content
OpenAdvisories
Medium · 6.1 Known exploited Public exploit CVE-2020-35730 EUVD-2020-23386GHSA-mr5j-h8xf-5m2m

An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. The attacker can send a plain…

Published Dec 28, 2020 · Updated Oct 21, 2025 · Assigned by mitre

Package: roundcube Package: roundcube Ecosystem: Debian Ecosystem: Ubuntu

Description

An XSS issue was discovered in Roundcube Webmail before 1.2.13, 1.3.x before 1.3.16, and 1.4.x before 1.4.10. The attacker can send a plain text e-mail message, with JavaScript in a link reference element that is mishandled by linkref_addindex in rcube_string_replacer.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 ↗
ReleasePackageFixed inAdvisory
Debian 14 roundcube 1.4.10+dfsg.1-1 —
Debian 13 roundcube 1.4.10+dfsg.1-1 —
Debian 12 roundcube 1.4.10+dfsg.1-1 —
Debian 10 roundcube 1.3.16+dfsg.1-1~deb10u1 DSA-4821-1
Debian 9 roundcube 1.2.3+dfsg.1-4+deb9u8 DLA-2508-1

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu Pro 22.04 LTS roundcube 1.5.0+dfsg.1-2ubuntu0.1~esm1 USN-5182-1
Ubuntu Pro 20.04 LTS roundcube 1.4.3+dfsg.1-1ubuntu0.1~esm2 USN-5182-1
Ubuntu Pro 18.04 LTS roundcube 1.3.6+dfsg.1-1ubuntu0.1~esm2 USN-5182-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 16.04 LTS roundcube 1.2~beta+dfsg.1-0ubuntu1+esm2 USN-5182-1

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SUSE Package Hub 15 SP4 roundcubemail 1.5.3-bp154.2.3.1 openSUSE-SU-2022:10148-1
SUSE Package Hub 15 SP3 roundcubemail 1.5.3-bp154.2.3.1 openSUSE-SU-2022:10148-1
SUSE Package Hub 15 SP2 roundcubemail 1.3.16-bp152.4.6.1 openSUSE-SU-2021:1014-1, openSUSE-SU-2021:0974-1, openSUSE-SU-2021:0959-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SUSE Package Hub 15 SP1 roundcubemail 1.3.16-bp151.4.6.1 openSUSE-SU-2021:0943-1

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed roundcubemail 1.4.11-1.3 openSUSE-SU-2024:11303-1
openSUSE Leap 15.4 roundcubemail 1.5.3-bp154.2.3.1 openSUSE-SU-2022:10148-1
openSUSE Leap 15.3 roundcubemail 1.5.3-bp154.2.3.1 openSUSE-SU-2022:10148-1
openSUSE Leap 15.2 roundcubemail 1.3.16-lp152.4.6.1 openSUSE-SU-2021:0931-1

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.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 12

References