CVE-2026-34443

UNKNOWN 0.0

FreeScout: SSRF protection bypass via broken CIDR check in checkIpByMask()

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

12th

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.

CWE	CWE-918
Vendor	freescout-help-desk
Product	freescout
Published	Mar 31, 2026
Last Updated	Apr 1, 2026

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Affected Versions

freescout-help-desk / freescout

< 1.8.211

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-c9v3-4c59-x5q2 github.com: https://github.com/freescout-help-desk/freescout/commit/ca6d5bb572d3e8f52a0e654a8623a53cb0fdd580 github.com: https://github.com/freescout-help-desk/freescout/releases/tag/1.8.211