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webmail

Vendor: roundcube

Actively Exploited 11 CISA KEV List
PoC / Exploits 15 Code Available
Total RCEs 7 Remote Access
Total CVEs 551 Total Indexed
Avg. EPSS 11.66% Exploit Prob.
Latest CVE CVE-2026-54433 Jul 14

Security Vulnerability Index

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5.4 CVSS

Roundcube before 1.4.11 allows XSS via crafted Cascading Style Sheets (CSS) token sequences during HTML email rendering.

EPSS: 1.01%
6.1 CVSS

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.

EPSS: 32.82%
6.1 CVSS

Roundcube Webmail before 1.3.15 and 1.4.8 allows stored XSS in HTML messages during message display via a crafted SVG document. This issue has been fixed in 1.4.8 and 1.3.15.

EPSS: 1.94%
6.1 CVSS

An issue was discovered in Roundcube Webmail before 1.2.11, 1.3.x before 1.3.14, and 1.4.x before 1.4.7. It allows XSS via a crafted HTML e-mail message, as demonstrated by a JavaScript payload in the xmlns (aka XML namespace) attribute of a HEAD element when an SVG element exists.

EPSS: 2.07%
6.1 CVSS

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. There is XSS via a malicious XML attachment because text/xml is among the allowed types for a preview.

EPSS: 76.60%
6.1 CVSS

An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. include/rcmail_output_html.php allows XSS via the username template object.

EPSS: 1.04%
9.8 CVSS
CVE-2020-12641
RCE Exploit Found

rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary code via shell metacharacters in a configuration setting for im_convert_path or im_identify_path.

EPSS: 84.46%
9.8 CVSS
CVE-2020-12640
Exploit Found

Roundcube Webmail before 1.4.4 allows attackers to include local files and execute code via directory traversal in a plugin name to rcube_plugin_api.php.

EPSS: 6.73%
6.5 CVSS

An issue was discovered in Roundcube Webmail before 1.4.4. A CSRF attack can cause an authenticated user to be logged out because POST was not considered.

EPSS: 1.83%
6.1 CVSS

An issue was discovered in Roundcube Webmail before 1.4.4. There is a cross-site scripting (XSS) vulnerability in rcube_washtml.php because JavaScript code can occur in the CDATA of an HTML message.

EPSS: 2.78%