CVE-2026-59239: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in Roskus Prospero Flow CRM
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.
CVE-2026-59239: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in Roskus Prospero Flow CRM
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.
CVSS v4.0
Score 8.6high
Affected software
pkg:github/Prospero Flow CRMRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Secur0
- Date Reserved
- 2026-07-03T11:24:39.242Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a67a2039c2644c7f89cfe2e
Added to database: 07/27/2026, 18:22:59 UTC
Last updated: 07/27/2026, 19:07:49 UTC
Views: 7
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