CVE-2026-41905 Details
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.
A server-side request forgery (SSRF) vulnerability has been identified in FreeScout versions prior to 1.8.217. The issue arises in the `Helper::sanitizeRemoteUrl()` function, which incorrectly re-validates the original URL after following HTTP redirects. This flaw allows an attacker to redirect FreeScout to internal HTTP services, such as cloud metadata or internal APIs, that would typically be inaccessible. Exploitation can be achieved by sending an email with an inline image that points to an attacker-controlled redirector, bypassing authentication requirements.
Users can update to FreeScout version 1.8.217 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 7, 2026CISA-ADP
Assessed May 7, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-22wf-848c-c856 | CISA-ADP | AdvisoryExploitRemedyTechnical AnalysisVendor |
| https://github.com/freescout-help-desk/freescout/releases/tag/1.8.217 | [email protected] | Release NotesVendor |
| https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-22wf-848c-c856 | [email protected] | AdvisoryExploitRemedyTechnical AnalysisVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| FreeScout | <= 1.8.216 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 7, 2026 | CVE Modified | CISA-ADP |
| May 7, 2026 | New CVE Received | [email protected] |