CVE-2026-40589

HIGH EPSS 14.4%
Published Apr 21, 20262mo ago · Modified Jun 17, 20261w ago
7.6 CVSS 3.1
High
Find Similar
Published Apr 21, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, a low-privileged agent can edit a visible customer and add an email address already owned by a hidden customer in another mailbox. The server discloses the hidden customer’s name and profile URL in the success flash, reassigns the hidden email to the visible customer, and rebinds hidden-mailbox conversations for that email to the visible customer. Version 1.8.214 fixes the issue.

CVSS Details

Base Score
7.6
Exploitability
2.8
Impact
4.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity High
Availability Low

Threat Intelligence

EPSS Exploit Probability
14.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-639

References 3

  • github.com https://github.com/freescout-help-desk/freescout/commit/2e2fe37111d92ac665b9ad8806eac94a1a3e502c
  • github.com https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214
  • github.com https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-mv55-3mgv-fxwr

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.