Overview
Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that allows a remote attacker to run malicious JavaScript code.
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 ; https://nvd.nist.gov/vuln/detail/CVE-2023-5631
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2023-5631 |
| Vendor / Product | Roundcube — Webmail |
| NVD Published | 2023-10-18 |
| NVD Last Modified | 2025-10-30 |
| CVSS 3.1 Score | 6.1 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| Severity | MEDIUM |
| CWE | CWE-79 |
| CISA KEV Added | 2023-10-26 |
| CISA KEV Deadline | 2023-11-16 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Required Action
CISA BOD 22-01 Deadline: 2023-11-16.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2023-10-26 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2023-11-16 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2023-5631 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |