CVE-2026-107393

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.

CVSS 3.1

6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-25)

CWEs

CWE-79, CWE-116

Published

2026-10-08

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

References

• https://github.com/freescout-help-desk/freescout/commit/0f41f5cabb581de156ec8eb344ff6c0e6e0cc66a
• https://github.com/freescout-help-desk/freescout/releases/tag/1.8.235
• https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9cm3-qvj2-8hg4
• https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9cm3-qvj2-8hg4

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