CVE-2026-107393
mediumFreeScout is a self-hosted help desk and shared mailbox.
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
6.1
6.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-10-08 20:17
Modified: 2026-10-14 02:16
NVD status: Awaiting Analysis
Last synced 3 days ago
Verified against the source API 2026-10-27 06:58 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/freescout-help-desk/freescout/commit/0f41f5cabb581de156ec8eb344ff6c0e6e... security-advisories@github.com
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.235 security-advisories@github.com
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9cm3-qvj2-8hg4 security-advisories@github.com
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-9cm3-qvj2-8hg4 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗