CVE-2026-34443
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductFreescout
PublishedMar 31, 2026
First seenMar 31, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- freescout freescout1.8.211 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| freescout freescout | v < 1.8.211 | 1.8.211 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.