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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.

PUBLISHED Reserved 2026-03-27 | Published 2026-03-31 | Updated 2026-04-01 | Assigner GitHub_M




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-918: Server-Side Request Forgery (SSRF)

Product status

< 1.8.211
affected

References

github.com/...escout/security/advisories/GHSA-c9v3-4c59-x5q2

github.com/...ommit/ca6d5bb572d3e8f52a0e654a8623a53cb0fdd580

github.com/...scout-help-desk/freescout/releases/tag/1.8.211

cve.org (CVE-2026-34443)

nvd.nist.gov (CVE-2026-34443)

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