Vulnerability Report

CVE-2024-42009

CISA KEV Active

Title: Roundcube Webmail Cross-Site Scripting (XSS)

Cross-Site Scripting (XSS)

Proof Of Concept

PoC Available for CVE-2024-42009

CWE Category CWE-79
Published Date Aug 05, 2024
Modified Date Nov 04, 2025
Exploit Status Available
Score 9.3 CVSS v3.1
Exploit Probability (EPSS)
79.62%

Vulnerability Summary

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.

Impacted Vendors

C
cobalt 1
R
roundcube 1
V
vdesk 1

Reference Links

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://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8 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
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity CRITICAL
9.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2024-42009 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/DaniTheHack3r/CVE-2024-42009-PoC
View Code
GitHub https://github.com/0xbassiouny1337/CVE-2024-42009
View Code
GitHub https://github.com/Shubhankargupta691/CVE-2024-42009
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Affected Stack

No specific products linked.