CVE-2024-42009
RoundCube Webmail Cross-Site Scripting Vulnerabili - [Actively Exploited]
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.
INFO
Published Date :
Aug. 5, 2024, 7:15 p.m.
Last Modified :
June 11, 2025, 3:46 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.8
Exploitability Score :
2.8
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
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.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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
Public PoC/Exploit Available at Github
CVE-2024-42009 has a 5 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-42009.
| URL | Resource |
|---|---|
| https://github.com/roundcube/roundcubemail/releases | Release Notes |
| https://github.com/roundcube/roundcubemail/releases/tag/1.5.8 | Release Notes |
| https://github.com/roundcube/roundcubemail/releases/tag/1.6.8 | Release Notes |
| https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8 | Vendor Advisory |
| https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ | Technical Description Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE PoC repository monitoring tool - Automated discovery and tracking of security vulnerabilities
Python
The scripts in this repository are made to abuse CVE-2024-42008 and CVE-2024-42009. Both of these CVEs are vulnerabilities found on Roundcube 1.6.7
JavaScript Python
CVE-2024-42009 Proof of Concept
Python
This Proof of Concept (PoC) demonstrates an exploit for CVE-2024-42009, leveraging a cross-site scripting (XSS) vulnerability to extract emails from a target webmail application. The attack injects a malicious payload that exfiltrates email content to an attacker-controlled listener.
Python
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.
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-42009 vulnerability anywhere in the article.
-
The Register
Dems demand audit of CVE program as Federal funding remains uncertain
Infosec In Brief A pair of Congressional Democrats have demanded a review of the Common Vulnerabilities and Exposures (CVE) program amid uncertainties about continued US government funding for the sch ... Read more
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Dark Reading
PoC Code Escalates Roundcube Vuln Threat
Source: Mircea Maties via ShutterstockThe threat associated with a critical decade-old remote code execution vulnerability in Roundcube webmail has increased sharply in recent days, with proof-of-conc ... Read more
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Help Net Security
Roundcube RCE: Dark web activity signals imminent attacks (CVE-2025-49113)
With an exploit for a critical Roundcube vulnerability (CVE-2025-49113) being offered for sale on underground forums and a PoC exploit having been made public, attacks exploiting the flaw are incoming ... Read more
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Daily CyberSecurity
UNC1151 Exploits Roundcube Flaw in Spear Phishing Attack
CERT Polska has sounded the alarm after uncovering a spear phishing campaign that targeted Polish organizations using a critical webmail vulnerability. The campaign is linked to the UNC1151 APT group, ... Read more
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Cyber Security News
Hackers Exploiting Roundcube Vulnerability to Steal User Credentials
A sophisticated spear phishing campaign targeting Polish organizations, where threat actors successfully exploited the CVE-2024-42009 vulnerability in Roundcube webmail systems. The attack enables Jav ... Read more
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cert.pl
UNC1151 exploiting Roundcube to steal user credentials in a spearphishing campaign
CERT Polska has observed a spear phishing campaign targeting Polish entities this week. The threat actor attempted to exploit the CVE-2024-42009 vulnerability, which allows JavaScript code to be execu ... Read more
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Help Net Security
Week in review: Tips for starting your cybersecurity career, Patch Tuesday forecast
Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: August 2024 Patch Tuesday forecast: Looking for a calm August release August 2024 July ended up being ... Read more
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Cyber Security News
Critical XSS Vulnerability In Roundcube Let Attackers Execute Arbitrary Code
Roundcube, a widely adopted open-source webmail application, is included by default in the popular cPanel web hosting control panel, leading to millions of installations worldwide. The software is com ... Read more
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The Hacker News
Roundcube Webmail Flaws Allow Hackers to Steal Emails and Passwords
Email Security / Vulnerability Cybersecurity researchers have disclosed details of security flaws in the Roundcube webmail software that could be exploited to execute malicious JavaScript in a victim' ... Read more
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Help Net Security
Roundcube flaws allow easy email account compromise (CVE-2024-42009, CVE-2024-42008)
Two cross-site scripting vulnerabilities (CVE-2024-42009, CVE-2024-42008) affecting Roundcube could be exploited by attackers to steal users’ emails and contacts, email password, and send emails from ... Read more
The following table lists the changes that have been made to the
CVE-2024-42009 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Modified Analysis by [email protected]
Jun. 11, 2025
Action Type Old Value New Value Changed Reference Type MITRE: https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ Types: Technical Description MITRE: https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ Types: Technical Description, Third Party Advisory -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Jun. 10, 2025
Action Type Old Value New Value Added Date Added 2025-06-09 Added Due Date 2025-06-30 Added 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. Added Vulnerability Name RoundCube Webmail Cross-Site Scripting Vulnerability -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 13, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Added CWE CWE-79 -
Initial Analysis by [email protected]
Sep. 06, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Changed Reference Type https://github.com/roundcube/roundcubemail/releases No Types Assigned https://github.com/roundcube/roundcubemail/releases Release Notes Changed Reference Type https://github.com/roundcube/roundcubemail/releases/tag/1.5.8 No Types Assigned https://github.com/roundcube/roundcubemail/releases/tag/1.5.8 Release Notes Changed Reference Type https://github.com/roundcube/roundcubemail/releases/tag/1.6.8 No Types Assigned https://github.com/roundcube/roundcubemail/releases/tag/1.6.8 Release Notes Changed Reference Type https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8 No Types Assigned https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8 Vendor Advisory Changed Reference Type https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ No Types Assigned https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ Technical Description Added CWE NIST CWE-79 Added CPE Configuration OR *cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:* versions up to (excluding) 1.5.8 *cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:* versions from (including) 1.6.0 up to (excluding) 1.6.8 -
CVE Received by [email protected]
Aug. 05, 2024
Action Type Old Value New Value Added 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. Added Reference MITRE https://github.com/roundcube/roundcubemail/releases [No types assigned] Added Reference MITRE https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/ [No types assigned] Added Reference MITRE https://github.com/roundcube/roundcubemail/releases/tag/1.5.8 [No types assigned] Added Reference MITRE https://github.com/roundcube/roundcubemail/releases/tag/1.6.8 [No types assigned] Added Reference MITRE https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-42009 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-42009
weaknesses.