CVEvulnerability

CVE-2020-35730

6.1 MEDIUM Known exploited Published 2020-12-28 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability — Roundcube Roundcube Webmail

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 linkref_addinindex in rcube_string_replacer.php.

Added to KEV
2023-06-22
Remediation due
2023-07-13
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Notes
https://roundcube.net/news/2020/12/27/security-updates-1.4.10-1.3.16-and-1.2.13; https://nvd.nist.gov/vuln/detail/CVE-2020-35730
Status
Analyzed
Published
2020-12-28
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
Weaknesses
CWE-79

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.

Affected configurations

• 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

Related

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References