Home › Exploited CVEs › CVE-2020-35730
CVE-2020-35730: Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
Roundcube Roundcube Webmail · in CISA KEV since 2023-06-22
2023-06-22added to KEV
2023-07-13federal remediation due date
32.69%EPSS exploit probability (30 days) 98.3th percentile
6.1 MEDIUMCVSS 3.1
Unknownknown ransomware use
906days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-79 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD published | 2020-12-28 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2020-35730.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.