CVE-2020-35730
Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
Summary
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.
Affected software
Vendor: Roundcube · Product: Roundcube Webmail
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Roundcube
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2025-49113 | RoundCube Webmail Deserialization of Untrusted Data Vulnerability | 96.8% | Yes |
| CVE-2020-12641 | Roundcube Webmail Remote Code Execution Vulnerability | 84.5% | Yes |
| CVE-2024-42009 | RoundCube Webmail Cross-Site Scripting Vulnerability | 79.6% | Yes |
| CVE-2020-13965 | Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability | 76.6% | Yes |
| CVE-2023-5631 | Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability | 75.9% | Yes |
| CVE-2024-37383 | RoundCube Webmail Cross-Site Scripting (XSS) Vulnerability | 73.3% | Yes |
| CVE-2023-43770 | Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability | 58.5% | Yes |
| CVE-2021-44026 | Roundcube Webmail SQL Injection Vulnerability | 42.8% | Yes |
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