Roundcube Webmail

What it is

Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that can lead to information disclosure via malicious link references in plain/text messages.

What to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Vendor notices and references

• roundcube.net/news/2023/09/15/security-update-1.6.3-released
• nvd.nist.gov/vuln/detail/CVE-2023-43770

Description and required action as published by CISA. Full record at NVD.