EUVD-2026-18651
GHSA-p32q-v29x-wq9r
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
3Description
** UNSUPPORTED WHEN ASSIGNED ** Focalboard version 8.0 fails to sanitize category IDs before incorporating them into dynamic SQL statements when reordering categories. An attacker can inject a malicious SQL payload into the category id field, which is stored in the database and later executed unsanitized when the category reorder API processes the stored value. This Second-Order SQL Injection (Time-Based Blind) allows an authenticated attacker to exfiltrate sensitive data including password hashes of other users. NOTE: Focalboard as a standalone product is not maintained and no fix will be issued.
Analysis
Second-order SQL injection in Focalboard 8.0 category reordering functionality enables authenticated attackers to exfiltrate sensitive data including password hashes via time-based blind injection. The vulnerability stems from unsanitized category IDs stored in the database and later executed in dynamic SQL statements. …
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Remediation
Within 24 hours: Inventory all Mattermost Focalboard 8.0 deployments and document business-critical usage. Within 7 days: Restrict database access permissions to Focalboard service accounts (apply principle of least privilege) and implement database activity monitoring on queries executed by the Focalboard application. …
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