{"id":"CVE-2026-62856","title":"FreeScout: Cross-User Notification Data Disclosure via LIKE Wildcard Injection in Polycast Channel Query","summary":"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 name…","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","cvssSource":"cna","cwe":["CWE-89","CWE-200","CWE-639"],"vendor":"freescout-help-desk","product":"freescout","affected":["freescout < 1.8.226"],"published":"2026-11-06","updated":"2026-11-06","sourceUpdated":"2026-11-06T17:00:33.424Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-62856","references":[{"url":"https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-gh3r-jh6q-wrvj","label":"https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-gh3r-jh6q-wrvj"},{"url":"https://github.com/freescout-help-desk/freescout/commit/1f4deee6369d89a70d291248499883b5bfdb99ff","label":"https://github.com/freescout-help-desk/freescout/commit/1f4deee6369d89a70d291248499883b5bfdb99ff"},{"url":"https://github.com/freescout-help-desk/freescout/commit/656cb2349cd3bb11f04f01c1587900dfb423a855","label":"https://github.com/freescout-help-desk/freescout/commit/656cb2349cd3bb11f04f01c1587900dfb423a855"},{"url":"https://github.com/freescout-help-desk/freescout/releases/tag/1.8.226","label":"https://github.com/freescout-help-desk/freescout/releases/tag/1.8.226"}],"tags":["cve.org"],"ingestedAt":"2026-11-06T18:00:12.576Z","epss":0.00256,"epssPercentile":0.17394,"slug":"CVE-2026-62856","body":"## Overview\n\nFreeScout 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.\n\n## Affected\n\n- `freescout < 1.8.226`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}