HIGH 7.7 NVD
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 wildcard
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.
References
- https://github.com/freescout-help-desk/freescout/commit/1f4deee6369d89a70d291248499883b5bf
- https://github.com/freescout-help-desk/freescout/commit/656cb2349cd3bb11f04f01c1587900dfb4
- 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
This high severity vulnerability with a CVSS score of 7.7 was published on 2026-11-06 via NVD.
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