CVE-2026-62856
FreeScout is a self-hosted help desk and shared mailbox application
- Risk score
- 46/100
- CVSS
- 7.7 v3.1
- Published
- 6 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- FreeScout is a self-hosted help desk and shared mailbox application. Prior to version 1.8.226, the polycast/receive endpoint fails to escape SQL LIKE wildcards in supplied channel names, while channel authorization applies only to names with specific prefixes. An unauthenticated attacker with a guest session and valid…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.8.226 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.7 high
References
- https://github.com/freescout-help-desk/freescout/commit/1f4deee6369d89a70d291248499883b5bfdb99ff
- https://github.com/freescout-help-desk/freescout/commit/656cb2349cd3bb11f04f01c1587900dfb423a855
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.226
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-gh3r-jh6q-wrvj
Original description
FreeScout is a self-hosted help desk and shared mailbox application. Prior to version 1.8.226, the polycast/receive endpoint fails to escape SQL LIKE wildcards in supplied channel names, while channel authorization applies only to names with specific prefixes. An unauthenticated attacker with a guest session and valid CSRF token can submit a wildcard channel name to retrieve matching notification events intended for other users. Notification payload generation lacks a corresponding access check, exposing conversation message content, identifiers, URLs, and notification HTML across users and mailboxes. This issue is fixed in version 1.8.226.
Last activity 6 Nov 2026. Patch Forecast updates every hour.