Roundcube · Webmail
CVE-2024-42009
RoundCube Webmail Cross-Site Scripting Vulnerability
What it is
A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.
CISA: RoundCube Webmail contains a cross-site scripting vulnerability. This vulnerability could allow a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Deadline for US federal agencies: June 30, 2025
- Added to the CISA list
- June 9, 2025
- Published
- August 5, 2024
- Severity
- Critical 9.3 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 83% in the top 0.3% of all known vulnerabilities
- Weakness
- CWE-79
- More details
- NVD · CVE.org · CISA
All references (5)
- https://github.com/roundcube/roundcubemail/releases
- https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcu…
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.8
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.8
- https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8
More exploited flaws from Roundcube
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Feb 20, 2026 | Deserialization of Untrusted Data | Webmail | Critical 9.9 | 99.7% |
| Feb 20, 2026 | Cross-site Scripting | Webmail | High 7.2 | 27% |
| Oct 24, 2024 | Cross-Site Scripting (XSS) | Webmail | Medium 6.1 | 74% |
| Jun 26, 2024 | Cross-Site Scripting (XSS) | Webmail | Medium 6.3 | 77% |
| Feb 12, 2024 | Persistent Cross-Site Scripting (XSS) | Webmail | Medium 6.1 | 64% |
| Oct 26, 2023 | Persistent Cross-Site Scripting (XSS) | Webmail | Medium 6.1 | 76% |
| Jun 22, 2023 | Webmail Remote Code Execution | Roundcube Webmail | Critical 9.8 | 84% |
| Jun 22, 2023 | Webmail Cross-Site Scripting (XSS) | Roundcube Webmail | Medium 6.1 | 33% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.