SSRF in Freescout-help-desk Freescout
CVE-2026-40566
FreeScout is a free self-hosted help desk and shared mailbox. Versions prior to 1.8.213 have a Server-Side Request Forgery (SSRF) vulnerability in the IMAP/SMTP connection test functionality of FreeScout's `MailboxesController`. Three AJAX…
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.000 (10.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N.
Affected products
- Freescout-help-desk Freescout — versions < 1.8.213
Weakness classification (CWE)
References
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-fg98-rgx6-8x4g (x_refsource_CONFIRM)
- https://github.com/freescout-help-desk/freescout/commit/efe82e31b4a0d4c0b20025d09df0615e8139ff08 (x_refsource_MISC)
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-40566?
- CVE-2026-40566 is a medium-severity vulnerability in Freescout-help-desk Freescout, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.1/10. Published 2026-04-21.
- How severe is CVE-2026-40566?
- Medium severity. CVSS v3 base score is 4.1 out of 10.