Vulnerability Report

CVE-2020-13964

Title: Roundcube Webmail Cross-Site Scripting (XSS)

XSS

Proof Of Concept

No public PoC currently indexed for CVE-2020-13964.

CWE Category CWE-79

Published Date Jun 09, 2020

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 6.1 CVSS v3.1

Exploit Probability (EPSS)

1.04%

Vulnerability Summary

CVE-2020-13964: 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.

Impacted Vendors

cobalt 1

roundcube 1

vdesk 1

Reference Links

https://github.com/roundcube/roundcubemail/commit/37e2bc745723ef6322f0f785aefd0b9313a40f19 https://github.com/roundcube/roundcubemail/releases/tag/1.3.12 https://github.com/roundcube/roundcubemail/releases/tag/1.4.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/ https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12 https://www.debian.org/security/2020/dsa-4700 https://github.com/roundcube/roundcubemail/commit/37e2bc745723ef6322f0f785aefd0b9313a40f19 https://github.com/roundcube/roundcubemail/releases/tag/1.3.12 https://github.com/roundcube/roundcubemail/releases/tag/1.4.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLESQ4LPJGMSWHQ4TBRTVQRDG7IXAZCW/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODPJXBHZ32QSP4MYT2OBCALYXSUJ47SK/ https://roundcube.net/news/2020/06/02/security-updates-1.4.5-and-1.3.12 https://www.debian.org/security/2020/dsa-4700

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-13964 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 17, 2026 MODIFIED

Vulnerability data updated via NVD.

November 21, 2024 MODIFIED

Vulnerability data or affected products updated.

June 09, 2020 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction REQUIRED

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Stack

No specific products linked.