Roundcube — known exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalog (KEV) lists vulnerabilities that CISA has confirmed are being exploited in the wild; U.S. federal civilian agencies are required to remediate each entry by its due date. This page joins the KEV entries for Roundcube with NVD CVSS scores and CISA's ransomware-campaign flag. See our methodology or browse all CVEs.
Key findings
CISA's Known Exploited Vulnerabilities catalog lists 11 Roundcube vulnerabilities confirmed as exploited in the wild across 2 products; none are currently flagged as used in known ransomware campaigns. Webmail is the most-affected product, with 7 entries (64% of the total). CISA added 2 entries in 2026 so far, compared with 1 in 2025. Across the 11 entries with an NVD CVSS score (100% of the total), the average score is 7.7; 4 entries are rated critical by NVD. The most recent addition is CVE-2025-49113 (RoundCube Webmail Deserialization of Untrusted Data Vulnerability), added on 2026-02-20.
Affected products
| Product | Entries | Share |
|---|---|---|
| Webmail | 7 | 64% |
| Roundcube Webmail | 4 | 36% |
Entries added per year
By date added to the KEV catalog
Exploited Roundcube vulnerabilities (11)
Newest first. CVSS scores from NVD where available.
| CVE | Product | Vulnerability | Date added | Ransomware | CVSS |
|---|---|---|---|---|---|
| CVE-2025-49113 | Webmail | RoundCube Webmail Deserialization of Untrusted Data Vulnerability | 2026-02-20 | — | CRITICAL9.9 |
| CVE-2025-68461 | Webmail | RoundCube Webmail Cross-site Scripting Vulnerability | 2026-02-20 | — | HIGH7.2 |
| CVE-2024-42009 | Webmail | RoundCube Webmail Cross-Site Scripting Vulnerability | 2025-06-09 | — | CRITICAL9.3 |
| CVE-2024-37383 | Webmail | RoundCube Webmail Cross-Site Scripting (XSS) Vulnerability | 2024-10-24 | — | MEDIUM6.1 |
| CVE-2020-13965 | Webmail | Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability | 2024-06-26 | — | MEDIUM6.1 |
| CVE-2023-43770 | Webmail | Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability | 2024-02-12 | — | MEDIUM6.1 |
| CVE-2023-5631 | Webmail | Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability | 2023-10-26 | — | MEDIUM6.1 |
| CVE-2020-35730 | Roundcube Webmail | Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability | 2023-06-22 | — | MEDIUM6.1 |
| CVE-2020-12641 | Roundcube Webmail | Roundcube Webmail Remote Code Execution Vulnerability | 2023-06-22 | — | CRITICAL9.8 |
| CVE-2021-44026 | Roundcube Webmail | Roundcube Webmail SQL Injection Vulnerability | 2023-06-22 | — | CRITICAL9.8 |
| CVE-2017-16651 | Roundcube Webmail | Roundcube Webmail File Disclosure Vulnerability | 2021-11-03 | — | HIGH7.8 |
Source: CISA Known Exploited Vulnerabilities catalog, joined with NIST NVD CVSS data. Vendor names are normalized across spellings. Compare all vendors.