CVE-2023-5631

Stored XSS vulnerability in Roundcube

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 attackerto load arbitrary JavaScript code.

Affected

Roundcube · Roundcubemail

CVSS v3.1 NVD

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

CVSS v3.1 ESET

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

EPSS

76.90% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2023-10-26

Published

2023-10-18

Updated

2025-10-21

Proof-of-concept exploits (1)

• roundcube/roundcubemail/issues/91687219★ · 2026-10-13

Security advisories

• 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://lists.debian.org/debian-lts-announce/2023/10/msg00035.html
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079
• 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

References

• CVE Record
• NVD entry

Related

• CVE-2015-2180
• CVE-2015-2181
• CVE-2020-12626