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Vulnerabilities CVE-2026-59239

CVE-2026-59239

High
Open
TLP:CLEAR

Stored XSS in Prospero Flow CRM email body allows administrator account takeover

AI Analysis

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Description

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.

Details

CVSS Score
8.6
EPSS Score
0.38%

31.5th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:L/SA:N
Confidence
90%
Published
Jul 27, 2026
Last Modified
Jul 27, 2026
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