CVE-2023-5631

MEDIUM KEV

Roundcube Webmail < 1.4.15, 1.5.x < 1.5.5, 1.6.x < 1.6.4 - Stored Cross-Site Scripting via SVG in HTML Email

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2023-5631 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added October 26, 2023.

Description

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.

Scores

CVSS v3 6.1
EPSS 0.8324
EPSS Percentile 99.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2023-10-26
VulnCheck KEV 2023-10-25
InTheWild.io 2023-10-26
ENISA EUVD EUVD-2023-57924
CWE
CWE-79
Status published
Products (5)
debian/debian_linux 10.0
debian/debian_linux 11.0
debian/debian_linux 12.0
fedoraproject/fedora 39
roundcube/webmail < 1.4.15
Published Oct 18, 2023
KEV Added Oct 26, 2023
Tracked Since Feb 18, 2026