What’s Vulnerable › Vulnerabilities

CVE-2020-15562

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-06 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• Debian Linux: 10.0
• Roundcube Webmail: before 1.2.11; from 1.3.0 before 1.3.14; from 1.4.0 before 1.4.7 — fixed in 1.2.11, 1.3.14, 1.4.7

How to fix

Upgrade to a fixed version: Roundcube Webmail 1.2.11, 1.3.14, 1.4.7. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.html
• https://github.com/roundcube/roundcubemail/commit/3e8832d029b035e3fcfb4c75839567a9580b4f82
• https://github.com/roundcube/roundcubemail/releases/tag/1.2.11
• https://github.com/roundcube/roundcubemail/releases/tag/1.3.14
• https://github.com/roundcube/roundcubemail/releases/tag/1.4.7
• https://www.debian.org/security/2020/dsa-4720
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.html
• https://github.com/roundcube/roundcubemail/commit/3e8832d029b035e3fcfb4c75839567a9580b4f82
• https://github.com/roundcube/roundcubemail/releases/tag/1.2.11
• https://github.com/roundcube/roundcubemail/releases/tag/1.3.14
• https://github.com/roundcube/roundcubemail/releases/tag/1.4.7
• https://www.debian.org/security/2020/dsa-4720

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