UpHeron
All vulnerabilities

Servers and applications

CVE-2020-35730

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.

Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 22 Jun 2023.

Severity
Medium 6.1
Published
28 Dec 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.2.13, 1.3.16, 1.4.10
Sources
NVD

Affected software

SoftwareAffected versions
RoundcubeServers and applications · cpe:a:roundcube:webmail
  • Every version before 1.2.13
  • From 1.3.0 before 1.3.16
  • From 1.4 before 1.4.10

Known exploited

CISA name
Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
Required action
Apply updates per vendor instructions.
Due for US agencies
13 Jul 2023
Used in ransomware
Not known

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-35730
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-35730