CVEvulnerability

CVE-2024-42009

9.3 CRITICAL Known exploited Published 2024-08-05 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

RoundCube Webmail Cross-Site Scripting Vulnerability — Roundcube Webmail

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.

Added to KEV: 2025-06-09
Remediation due: 2025-06-30
Ransomware use: Unknown
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.
Notes: https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8 ; https://nvd.nist.gov/vuln/detail/CVE-2024-42009

Status: Analyzed
Published: 2024-08-05
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 9.3 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 9.3 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Weaknesses: CWE-79

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.

Affected configurations

• roundcube webmail (< 1.5.8) • roundcube webmail (>= 1.6.0 < 1.6.8)

Weakness · CWE (1)

CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References