SQL Injection in Freescout-Help-Desk Freescout
CVE-2026-62856
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.
Vulnerability class: SQL Injection
Published .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Freescout-Help-Desk Freescout — versions < 1.8.226
Weakness classification (CWE)
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
Frequently asked questions
- What is CVE-2026-62856?
- CVE-2026-62856 is a high-severity vulnerability in Freescout-Help-Desk Freescout, classified under SQL Injection. CVSS score: 7.7/10. Published 2026-11-06.
- How severe is CVE-2026-62856?
- High severity. CVSS v3 base score is 7.7 out of 10.