CVE-2026-41905— FreeScout vulnerable to SSRF via Helper::sanitizeRemoteUrl: redirect destination not re-validated, allowing internal HTTP / cloud-metadata access
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I. Basic Information for CVE-2026-41905
Vulnerability Information
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Vulnerability Title
FreeScout vulnerable to SSRF via Helper::sanitizeRemoteUrl: redirect destination not re-validated, allowing internal HTTP / cloud-metadata access
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| freescout-help-desk | freescout | < 1.8.217 | - |
II. Public POCs for CVE-2026-41905
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7804 chars
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III. Intelligence Information for CVE-2026-41905
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- Release 1.8.217 · freescout-help-desk/freescout · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-41905
IV. Related Vulnerabilities
Same product: freescout
- CVE-2026-41906
FreeScout: Conversation Change-Customer Cross-Mailbox Author - CVE-2026-41904
FreeScout Stored XSS vulnerability in mailbox auto-reply: pa - CVE-2026-41902
FreeScout's user invitation hash never expires: permanent un - CVE-2026-41903
FreeScout IDOR Vulnerability: PERM_EDIT_USERS allows modifyi - CVE-2026-41194
FreeScout's Mailbox OAuth disconnect uses a state-changing G
Same vendor: freescout-help-desk
- CVE-2026-41906
FreeScout: Conversation Change-Customer Cross-Mailbox Author - CVE-2026-41904
FreeScout Stored XSS vulnerability in mailbox auto-reply: pa - CVE-2026-41902
FreeScout's user invitation hash never expires: permanent un - CVE-2026-41903
FreeScout IDOR Vulnerability: PERM_EDIT_USERS allows modifyi - CVE-2026-41194
FreeScout's Mailbox OAuth disconnect uses a state-changing G
Same weakness: CWE-918
- CVE-2026-8034
Server-side request forgery vulnerability in GitHub Enterpri - CVE-2026-41105
Azure Monitor Action Group Notification System Elevation of - CVE-2026-42449
n8n-MCP: IPv4-mapped IPv6 addresses bypass SSRF protection i - CVE-2026-8081
router-for-me CLIProxyAPI api_tools.go server-side request f - CVE-2026-41688
Incomplete fix for CVE-2026-33399: SSRF in Wallos
V. Comments for CVE-2026-41905
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