Vulnerability Report

CVE-2023-5631

CISA KEV Active

Title: Roundcube Webmail Cross-Site Scripting (XSS)

Cross-Site Scripting (XSS)

Proof Of Concept

No public PoC currently indexed for CVE-2023-5631.

CWE Category CWE-79
Published Date Oct 18, 2023
Modified Date Oct 30, 2025
Exploit Status Not Found
Score 6.1 CVSS v3.1
Exploit Probability (EPSS)
75.87%

Vulnerability Summary

CVE-2023-5631: Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php behavior. This could allow a remote attacker to load arbitrary JavaScript code.

Impacted Vendors

C
cobalt 1
R
roundcube 1
V
vdesk 1

Reference Links

http://www.openwall.com/lists/oss-security/2023/11/01/1 http://www.openwall.com/lists/oss-security/2023/11/01/3 http://www.openwall.com/lists/oss-security/2023/11/17/2 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079 https://github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474dc529dd31d https://github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf75552e5376613 https://github.com/roundcube/roundcubemail/issues/9168 https://github.com/roundcube/roundcubemail/releases/tag/1.4.15 https://github.com/roundcube/roundcubemail/releases/tag/1.5.5 https://github.com/roundcube/roundcubemail/releases/tag/1.6.4 https://lists.debian.org/debian-lts-announce/2023/10/msg00035.html https://lists.fedoraproject.org/archives/list/[email protected]/message/LK67Q46OIEGJCRQUBHKLH3IIJTBNGGX4/ https://roundcube.net/news/2023/10/16/security-update-1.6.4-released https://roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15 https://www.debian.org/security/2023/dsa-5531 http://www.openwall.com/lists/oss-security/2023/11/01/1 http://www.openwall.com/lists/oss-security/2023/11/01/3 http://www.openwall.com/lists/oss-security/2023/11/17/2 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079 https://github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474dc529dd31d https://github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf75552e5376613 https://github.com/roundcube/roundcubemail/issues/9168 https://github.com/roundcube/roundcubemail/releases/tag/1.4.15 https://github.com/roundcube/roundcubemail/releases/tag/1.5.5 https://github.com/roundcube/roundcubemail/releases/tag/1.6.4 https://lists.debian.org/debian-lts-announce/2023/10/msg00035.html https://lists.fedoraproject.org/archives/list/[email protected]/message/LK67Q46OIEGJCRQUBHKLH3IIJTBNGGX4/ https://roundcube.net/news/2023/10/16/security-update-1.6.4-released https://roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15 https://www.debian.org/security/2023/dsa-5531 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-5631
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 v3.1
Source Entity [email protected]
Severity MEDIUM
5.4
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:L/UI:R/S:C/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-5631 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

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.