Servers and applications
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.
Actively exploited: CISA added it to its Known Exploited Vulnerabilities catalog on 26 Oct 2023.
- Severity
- Medium 5.4
- Published
- 18 Oct 2023
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Fixed in
- 1.4.15, 1.5.5, 1.6.4
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
RoundcubeServers and applications · cpe:a:roundcube:webmail |
|
Known exploited
- CISA name
- Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Due for US agencies
- 16 Nov 2023
- Used in ransomware
- Not known