CVE-2024-42009
roundcube webmail
Published 5 Aug 2024 · updated 17 Jun 2026 · Analyzed
9.3 Critical · CVSS 3.1, NVD
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 9 Jun 2025, with a remediation deadline of 30 Jun 2025 for US federal agencies.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description
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.
References
- github.com/roundcube/roundcubemail/releases · Release Notes
- github.com/roundcube/roundcubemail/releases/tag/1.5.8 · Release Notes
- github.com/roundcube/roundcubemail/releases/tag/1.6.8 · Release Notes
- roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8 · Vendor Advisory
- sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ · Technical Description, Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-42009 · US Government Resource