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Back to active CVEs
Medium · CVSS 6.1CVE-2026-107393

FreeScout: Stored HTML Injection in Administrator Alert Emails via Spoofed CF-Connecting-IP HeaderCVE-2026-107393

Answer in brief

CVE-2026-107393 records a Medium severity (CVSS 6.1) vulnerability in FreeScout: Stored HTML Injection in Administrator Alert Emails via Spoofed CF-Connecting-IP Header. The current sources do not mark it as known exploited. The current feed maps freescout-help-desk/freescout (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 8, 2026Updated Oct 8, 2026Source checked Oct 8, 2026First seen by HOL Oct 8, 2026Material review Oct 8, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps freescout-help-desk/freescout (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
freescout-help-desk/freescoutgeneric<1.8.2351.8.235

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for freescout-help-desk/freescout.
  2. 2Review the reported fix. Update freescout-help-desk/freescout to 1.8.235 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 8, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Indico: Cross-Site-Scripting in minutes editorAlso CWE-79
  • Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify AccessAlso CWE-79
  • Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify AccessAlso CWE-79
  • Satel Netco Design Relative path traversalSame generic ecosystem
  • Plaintext Storage of a Device-Specific Private Key in Tapo S505 FirmwareSame generic ecosystem
  • TVU Networks Receiver/Transceiver Authentication Bypass via /tvu/LoginSame generic ecosystem

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79, CWE-116
Source
CVE List V5
Source checked
Oct 8, 2026
References
3 linked sources
Open source record