CVE-2026-59239 | Stored Cross-site Scripting (CWE-79) in the email module in … | CVSS 8.6 HIGH

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.

Metadata

CVE ID: CVE-2026-59239
State: PUBLISHED
Assigner: Secur0
Reserved: 2026-07-03 11:24 UTC
Published: 2026-07-27 17:56 UTC
Last updated: 2026-07-27 18:31 UTC
Primary CWE: CWE-79
CWE-79 Improper neutralization of input during web page gene…
Vendor / Product: Roskus / Prospero Flow CRM
Sources: cve.org · NVD

Severity & Metrics

8.6 HIGH CVSS 4.0

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Roskus	Prospero Flow CRM	—	1.0.0 < 5.4.4

Weakness (CWE)

CWE	Source	Description
CWE-79	cna	CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.6	HIGH	4.0	cna	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

References (3)