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VULNERABILITIES

CVE-2026-107393 Details

Description

FreeScout is a self-hosted help desk and shared mailbox. Prior to 1.8.235, when APP_CLOUDFLARE_IS_USED is enabled, FreeScout trusts an unvalidated CF-Connecting-IP header during failed login attempts and stores the spoofed value in the activity log. LogsMonitor inserts the value into an administrator alert email without HTML escaping, allowing injected HTML to execute when an administrator opens the email. This issue is fixed in version 1.8.235.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9cm3-qvj2-8hg4 CISA-ADP
https://github.com/freescout-help-desk/freescout/commit/0f41f5cabb581de156ec8eb344ff6c0e6e0cc66a [email protected]
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.235 [email protected]
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9cm3-qvj2-8hg4 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-116Improper Encoding or Escaping of Output[email protected]
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-107393
NVD Published Date:
Oct 8, 2026
NVD Last Modified:
Oct 14, 2026
Source:
[email protected]
CVE-2026-107393 Details - Not Deferred