Vulnerability Description
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.211, checkIpByMask() in app/Misc/Helper.php checks whether the input IP contains a / character. Plain IP addresses never contain /, so the function always returns false without checking any CIDR ranges. The entire 10.0.0.0/8 and 172.16.0.0/12 private ranges are unprotected. This issue has been patched in version 1.8.211.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freescout | Freescout | < 1.8.211 |
Related Weaknesses (CWE)
References
- https://github.com/freescout-help-desk/freescout/commit/ca6d5bb572d3e8f52a0e654aPatch
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.211Release Notes
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-c9v3-4Vendor AdvisoryExploit
FAQ
What is CVE-2026-34443?
CVE-2026-34443 is a vulnerability with a CVSS score of 5.3 (MEDIUM). FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.211, checkIpByMask() in app/Misc/Helper.php checks whether the input IP contains a / character. ...
How severe is CVE-2026-34443?
CVE-2026-34443 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34443?
Check the references section above for vendor advisories and patch information. Affected products include: Freescout Freescout.