XSS in Roskus Prospero Flow Crm

CVE-2026-59239

Stored Cross-site Scripting (CWE-79) in the email module in Roskus Prospero Flow CRM before 5.4.4 allows a remote, authenticated low-privileged user to execute arbitrary JavaScript in another user's browser, including administrators, leading to session compromise and account takeover, via a payload stored in an email body that is persisted without sanitization and rendered unescaped with {!! $email->body !!} when the recipient opens the message.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (31.7th percentile) — read the EPSS interpretation.