CVE-2024-42009

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.

CVSS v3.1 Score

9.3

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Jun 9, 2025 Remediation due: Jun 30, 2025

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
roundcube	webmail	< 1.5.8
roundcube	webmail	1.6.0 — 1.6.8

References

Advisories & Patches

https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8

Other References

https://github.com/roundcube/roundcubemail/releases https://github.com/roundcube/roundcubemail/releases/tag/1.5.8 https://github.com/roundcube/roundcubemail/releases/tag/1.6.8 https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-42009

Frequently Asked Questions

What is CVE-2024-42009? +

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. It has a CVSS v3.1 base score of 9.3 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2024-42009? +

CVE-2024-42009 has a CVSS v3.1 score of 9.3 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-42009? +

CVE-2024-42009 affects products from roundcube, specifically: webmail. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-42009? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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