CVE-2024-42009A 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 Desani…
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It affects roundcube webmail. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Jun 9, 2025; federal agencies had to remediate by Jun 30, 2025. Treat that date as your deadline.
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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.
- CVSS
- 9.3 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Added to CISA KEV Jun 9, 2025; federal remediation due Jun 30, 2025Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 82.88% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
roundcube webmail roundcube:webmail | before 1.5.8; from 1.6.0 before 1.6.8 | NVD |
References
- https://github.com/roundcube/roundcubemail/releasesrelease-notes
- https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/technical-description, third-party-advisory
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.8release-notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.8release-notes
- https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-42009us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.