Medium severity · published Apr 21, 2026
CVE-2026-41194
FreeScout's Mailbox OAuth disconnect uses a state-changing GET and is CSRFable
5.4
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
freescout · freescout-help-desk
< 1.8.215 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41194
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41194
github.com
https://github.com/freescout-help-desk/freescout/commit/eb397efae2086524ba0ee91abb916de8db7a4ac1
github.com
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.215
github.com
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-6rvw-fhqx-cfv5
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