Auth bypass in Freescout-help-desk Freescout
CVE-2026-40592
FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the undo-send route `GET /conversation/undo-reply/{thread_id}` checks only whether the current user can view the parent conversation. It does not verif…
Vulnerability class: Broken Access Control
EPSS: 0.000 (13.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L.
Affected products
- Freescout-help-desk Freescout — versions < 1.8.214
Weakness classification (CWE)
References
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-674v-r6xp-mvp6 (x_refsource_CONFIRM)
- https://github.com/freescout-help-desk/freescout/commit/c779afdda86fa00a4b85779e034bbfd9ce20c76d (x_refsource_MISC)
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-40592?
- CVE-2026-40592 is a medium-severity vulnerability in Freescout-help-desk Freescout, classified under Missing Authorization. CVSS score: 5.9/10. Published 2026-04-21.
- How severe is CVE-2026-40592?
- Medium severity. CVSS v3 base score is 5.9 out of 10.