CVE-2026-62856highCWE-200CWE-639CWE-89

CVE-2026-62856: falha de alta gravidade em freescout-help-desk freescout

FreeScout: Cross-User Notification Data Disclosure via LIKE Wildcard Injection in Polycast Channel Query

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18Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 7.7
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
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freescout-help-desk · freescout
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