February 12, 2024 · Applied Cybernetics Group
CVE-2023-43770 Roundcube Webmail
Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
- Added to KEV
2024-02-12- Federal due date
2024-03-04- Vendor
- Roundcube
- Product
- Webmail
- EPSS
- 99.2th percentile (score 0.637, as of
2026-11-06) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- ATT&CK
- T1059 , T1082 , T1189 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2023-43770
CISA short description
Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that can lead to information disclosure via malicious link references in plain/text messages.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.