Hacking, PenTest, and Cybersecurity Tools for Your Security Arsenal!

Loading CVE intelligence

Loading vulnerability catalog

Kitploit is a directory of hacking, cybersecurity, and pentesting tools. Discover the latest project updates to find vulnerabilities, analyze systems, automate testing, and strengthen your security.

Tool Directory

CVE-2020-35730

MediumPublished

Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability

Published: Dec 28, 2020
Updated: Oct 21, 2025
Assigning CNA: mitre
Evidence observed: Jun 22, 2023

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS probability estimate

32.7%

Moderate · next 30 days

Percentile: 98.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

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.

Sources

roundcube-cve-2021-44026Exploit
A demo exploit for CVE-2021-44026, a SQL injection in Roundcube
CVE-2021-44026-PoCPoC
Bug Chain XSS (CVE-2020-35730 and CVE-2023-43770) to SQLi (CVE-2021-44026)

Responsible use

Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.