Roundcube<1.4.14,1.5.x<1.5.4,1.6.x<1.6.3 XSS via plain email links (rcube_string_replacer.php)
CVE-2023-43770 Published on September 22, 2023
Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of program/lib/Roundcube/rcube_string_replacer.php behavior.
Known Exploited Vulnerability
This Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that can lead to information disclosure via malicious link references in plain/text messages.
The following remediation steps are recommended / required by March 4, 2024: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2023-43770 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2023-43770 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2023-43770
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Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.