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.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Feb 12, 2024
- US federal agencies must remediate it by Mar 4, 2024 (BOD 22-01)
- First attack observed 143 days after disclosure
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Source: CISA KEV · Jul 23, 2026 Jul 10, 2026 Mar 15, 2026 Dec 10, 2025 Oct 9, 2025 Jul 16, 2025
CVSS score6.1 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NWeakness type (CWE)CWE-79, CWE-79
Vendorsdebian, roundcube
Affected products
| Vendors | Product | Versions |
|---|---|---|
| roundcube | webmail | < 1.4.14 |
| debian | debian linux | 10.0 |
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This product uses the NVD API but is not endorsed or certified by the NVD.