What’s Vulnerable › Vulnerabilities

CVE-2026-41194: FreeScout's Mailbox OAuth disconnect uses a state-changing GET and is CSRFable

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-21 · updated 2026-06-17
• Weakness: CWE-352

Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, the mailbox OAuth disconnect action is implemented as `GET /mailbox/oauth-disconnect/{id}/{in_out}/{provider}`. It removes stored OAuth metadata from the mailbox and then redirects. Because it is a GET route, no CSRF token is required and the action can be triggered cross-site against a logged-in mailbox admin. Version 1.8.215 fixes the vulnerability.

Affected products

• freescout-help-desk freescout: before 1.8.215

References

• https://github.com/freescout-help-desk/freescout/commit/eb397efae2086524ba0ee91abb916de8db7a4ac1
• https://github.com/freescout-help-desk/freescout/releases/tag/1.8.215
• https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6rvw-fhqx-cfv5

Get alerted when CVE-2026-41194 or the next vulnerability affects your stack