Cross-Site Scripting Vulnerability in Roundcube Webmail
CVE-2020-35730
Key Information:
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What is CVE-2020-35730?
A Cross-Site Scripting (XSS) vulnerability exists in Roundcube Webmail prior to version 1.2.13, 1.3.16, and 1.4.10. This flaw allows attackers to exploit the application by sending a specially crafted plain text email containing JavaScript code. The vulnerability arises from improper handling of link references in the rcube_string_replacer.php file, which can lead to arbitrary script execution in the context of the user's session. It is crucial for users to upgrade to a secure version to mitigate potential risks.
CISA has reported CVE-2020-35730
CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2020-35730 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace
The CISA's recommendation is: Apply updates per vendor instructions.
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Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
69% chance of being exploited in the next 30 days.
CVSS V3.1
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
- 🦅
CISA Reported
Vulnerability published
Vulnerability Reserved