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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...

Basic Information

CVE State
PUBLISHED
Reserved Date
July 26, 2024
Published Date
August 05, 2024
Last Updated
October 21, 2025
Vendor
n/a
Product
n/a
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.
Tags
php cisa nuclei_scanner

CVSS Scores

CVSS v3.1

9.3 - CRITICAL

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

EPSS Score

Score
90.48% (Percentile: 99.63%) as of 2026-05-31

SSVC Information

Exploitation
active
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2026-06-01 13:30:39 UTC) Source
Proof of Concept Available
Yes (added 2025-02-11 23:02:42 UTC) Source

References

https://github.com/roundcube/roundcubemail/releases https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ 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

Known Exploited Vulnerability Information

Source Added Date
CVE 2026-06-01 10:32:11 UTC

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-42009.yaml 2026-06-01 15:34:39 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

0xbassiouny1337/CVE-2024-42009

Type: github • Created: 2025-02-11 23:02:42 UTC • Stars: 2

This script exploits a stored XSS vulnerability (CVE-2024-42009) in Roundcube Webmail version 1.6.7. It injects a malicious payload into the webmail system, which, when triggered, exfiltrates email content from the victim’s inbox.

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Proof of Concept Exploit Available

  • Added to KEVIntel

  • Detected by Nuclei