CVE-2023-5631

Roundcubemail

Published 18 Oct 2023 · updated 17 Jun 2026 · Analyzed

5.4 Medium · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 26 Oct 2023, with a remediation deadline of 16 Nov 2023 for US federal agencies.

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

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.

References

www.openwall.com/lists/oss-security/2023/11/01/1 · Mailing List, Third Party Advisory
www.openwall.com/lists/oss-security/2023/11/01/3 · Mailing List, Third Party Advisory
www.openwall.com/lists/oss-security/2023/11/17/2 · Mailing List, Third Party Advisory
bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079 · Mailing List, Patch
github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474dc529dd31d · Patch
github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf75552e5376613 · Patch
github.com/roundcube/roundcubemail/issues/9168 · Exploit, Issue Tracking
github.com/roundcube/roundcubemail/releases/tag/1.4.15 · Release Notes
github.com/roundcube/roundcubemail/releases/tag/1.5.5 · Release Notes
github.com/roundcube/roundcubemail/releases/tag/1.6.4 · Release Notes
lists.debian.org/debian-lts-announce/2023/10/msg00035.html · Mailing List, Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LK67Q46OIEGJCRQUBHKLH3IIJTBNGGX4/ · Mailing List
roundcube.net/news/2023/10/16/security-update-1.6.4-released · Release Notes
roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15 · Release Notes
www.debian.org/security/2023/dsa-5531 · Mailing List
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-5631 · US Government Resource