Vulnerability · Published May 7, 2026 · Assigned by GitHub_M

CVE-2026-41905FreeScout vulnerable to SSRF via Helper::sanitizeRemoteUrl: redirect destination not re-validated, allowing internal HTTP / cloud-metadata access

High 7.7

In plain English

A high-severity server-side request forgery in freescout from freescout-help-desk. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.2%top 88.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.217, Helper::sanitizeRemoteUrl() in app/Misc/Helper.php follows HTTP redirects via curlGetLastRedirectedUrl() but then re-validates the original URL instead of the final redirect destination. An attacker who can supply any URL that passes the initial host check can redirect FreeScout to internal HTTP services (cloud metadata, internal APIs, RFC1918 ranges) that would normally be blocked. This issue has been patched in version 1.8.217.

Affected products (as reported)

Vendor	Product	Versions
freescout-help-desk	freescout	< 1.8.217

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-22wf-848c-c856 x_refsource_CONFIRM
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.217 x_refsource_MISC