PT-2026-34025 · Freescout Help Desk · Freescout

Published 2026-04-21 · Updated 2026-04-27 · CVE-2026-40590

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions FreeScout versions prior to 1.8.214

Description The Change Customer modal exposes a flow to create new customers via the "POST /customers/ajax" endpoint using the action parameter set to create. Under limited visibility, this endpoint fails to perform unique-email validation. If a provided email is associated with a hidden customer, the Customer::create() function reuses that hidden customer object and populates empty profile fields with input controlled by an attacker.

Recommendations Update to version 1.8.214.

Exploit

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-40590

Affected Products

Freescout

References · 6

• 🔥 https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-wjw4-8xg6-342m · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-40590 · Security Note
• https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214 · Note
• https://github.com/freescout-help-desk/freescout/commit/b3d7611e6e173ed8a5e525b791deb6b32cf1ce62 · Note
• https://twitter.com/infoflowcloud/status/2048911705208422817 · Twitter Post
• https://twitter.com/CVEnew/status/2048910162677920090 · Twitter Post