Vulnerability Intelligence Report
Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
CVE-2023-43770
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.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
6.1
MEDIUM
Exploitability:2.9
Impact Score:2.8
EPSS Probability:56.89%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-79 ↗CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| roundcube | webmail | all |
| debian | debian_linux | 10.0 |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2023-09-22T00:00:00 |
| Published | 2023-09-22T00:00:00 |
| Last Updated | 2025-10-21T23:05:36 |
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