CVE-2026-25773 PUBLISHED

Focalboard Second-Order SQL Injection in category reorder endpoint allows data exfiltration (unsupported product, no fix)

Assigner: Mattermost
Reserved: 03.04.2026 Published: 03.04.2026 Updated: 03.04.2026

** 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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS Score: 8.1

Product Status

Vendor Mattermost
Product Focalboard
Versions Default: unaffected
  • affected from 0 to 8.0 (incl.)

Credits

  • Siam Thanat Hack Company Limited (pentest@sth.sh) finder

References

Problem Types

  • CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') CWE