CVE-2020-35730: Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability

Published Dec 28, 2020
·
Updated

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 linkrefaddindex in rcubestringreplacer.php.

Other sources

Roundcube Webmail contains a cross-site scripting (XSS) vulnerability that allows an attacker to send a plain text e-mail message with Javascript in a link reference element that is mishandled by linkrefaddinindex in rcubestringreplacer.php.

— CISA

Affected Software

9 affected componentsFixes available
debian/roundcube<=1.4.9+dfsg.1-1, <=1.3.15+dfsg.1-1~deb10u1, <=1.2.3+dfsg.1-4+deb9u7
1.4.10+dfsg.1-11.3.16+dfsg.1-1~deb10u1
Roundcube Roundcube Webmail
Roundcube Webmail<1.2.13
Roundcube Webmail>=1.3.0<1.3.16
Roundcube Webmail>=1.4<1.4.10
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Debian Debian Linux=9.0
debian/roundcube
1.4.15+dfsg.1-1+deb11u41.4.15+dfsg.1-1+deb11u61.6.5+dfsg-1+deb12u61.6.12+dfsg-0+deb13u11.6.12+dfsg-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/roundcube to a version that resolves this vulnerability.

    Fixed in 1.4.10+dfsg.1-1Fixed in 1.3.16+dfsg.1-1~deb10u1
  2. Upgrade

    Upgrade debian/roundcube to a version that resolves this vulnerability.

    Fixed in 1.4.15+dfsg.1-1+deb11u4Fixed in 1.4.15+dfsg.1-1+deb11u6Fixed in 1.6.5+dfsg-1+deb12u6Fixed in 1.6.12+dfsg-0+deb13u1Fixed in 1.6.12+dfsg-1

Event History

Dec 28, 2020
CVE Published
via MITRE·07:37 PM
Data Sourced
via MITRE·07:37 PM
Description
Data Sourced
via NVD·08:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Jun 22, 2023
Known Exploited
via CISA·12:00 AM
Feb 12, 2024
News Published
via BleepingComputer·07:03 PM
News Published
via BleepingComputer·07:04 PM
May 21, 2025
News Published
via The Register·07:16 PM
News Published
via The Register·07:21 PM
Jan 11, 2026
Data Sourced
via Debian·07:38 AM
DescriptionAffected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the vulnerability ID for the Roundcube Webmail cross-site scripting (XSS) vulnerability?

The vulnerability ID for the Roundcube Webmail cross-site scripting (XSS) vulnerability is CVE-2020-35730.

2

What is the description of CVE-2020-35730?

CVE-2020-35730 is a cross-site scripting (XSS) vulnerability in Roundcube Webmail that allows an attacker to send a plain text e-mail message with JavaScript in a link reference element.

3

What software is affected by CVE-2020-35730?

Roundcube Webmail versions are affected by the CVE-2020-35730 vulnerability.

4

How can an attacker exploit CVE-2020-35730?

An attacker can exploit CVE-2020-35730 by sending a plain text e-mail message with JavaScript in a malformed link reference element.

5

Where can I find more information about CVE-2020-35730?

You can find more information about CVE-2020-35730 on the Roundcube Webmail website.

Company

Resources

Contact

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