EUVD-2026-13219Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
Lifecycle Timeline
4DescriptionGitHub Advisory
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. In versions 1.8.208 and below, the ThreadPolicy::edit() method contains a broken access control vulnerability that allows any authenticated user (regardless of role or mailbox access) to read and modify all customer-created thread messages across all mailboxes. This flaw enables silent modification of customer messages (evidence tampering), bypasses the entire mailbox permission model, and constitutes a GDPR/compliance violation. The issue has been fixed in version 1.8.209.
AnalysisAI
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework.
Technical ContextAI
This vulnerability is classified as Improper Access Control (CWE-284).
RemediationAI
Monitor vendor advisories for patches. Apply mitigations such as network segmentation, access restrictions, and monitoring.
File upload bypass in FreeScout 1.8.206 — patch bypass for CVE-2026-27636. PoC and patch available. CVSS 10.0.
Remote code execution in FreeScout prior to version 1.8.206 allows authenticated users to upload `.htaccess` files that
Predictable password reset tokens in FreeScout help desk before 1.8.206. Weak random number generation allows attackers
FreeScout is a self-hosted help desk and shared mailbox. Rated critical severity (CVSS 9.0), this vulnerability is remot
FreeScout is a self-hosted help desk and shared mailbox. Rated high severity (CVSS 8.0), this vulnerability is remotely
FreeScout is an open source help desk and shared inbox built with PHP. Rated high severity (CVSS 7.1), this vulnerabilit
FreeScout is a free, self-hosted help desk and shared mailbox. Rated medium severity (CVSS 6.3), this vulnerability is r
FreeScout is a free, self-hosted help desk and shared mailbox. Rated medium severity (CVSS 6.1), this vulnerability is r
A stored cross-site scripting (XSS) vulnerability exists in FreeScout help desk software versions 1.8.208 and below, whe
Arbitrary file write in FreeScout (prior to 1.8.215) allows authenticated administrators to achieve remote code executio
Unauthenticated account takeover in FreeScout versions prior to 1.8.217 allows remote attackers to gain permanent access
Unauthenticated remote attackers can access administrative diagnostic endpoints in FreeScout versions prior to 1.8.213,
Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
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