CVE Watch—

CVE-2020-13965

Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability

CVSS

—

No CVSS

EPSS

76.6%

p99

KEV

YES

Jun 26, 2024

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

76.6%EPSS · 30 days76.6%

2026-06-302026-07-16

KEV catalog record

Product

Roundcube / Webmail

Vulnerability

Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability

Added to KEV

Jun 26, 2024

Remediate by

Jul 17, 2024

Known ransomware use

Summary description

Roundcube Webmail contains a cross-site scripting (XSS) vulnerability that allows a remote attacker to manipulate data via a malicious XML attachment.

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes

https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12; https://nvd.nist.gov/vuln/detail/CVE-2020-13965

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