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CVE-2026-25773— Focalboard Second-Order SQL Injection in category reorder endpoint allows data exfiltration (unsupported product, no fix)

Quick assessment

Affected
Mattermost Focalboard
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Focalboard是Mattermost Community开源的一个多语言、自托管的项目管理工具。 Focalboard 8.0版本存在安全漏洞，该漏洞源于对类别ID清理不足，可能导致二阶SQL注入和数据泄露。

CVSS 8.1 · High EPSS 0.39% · P30

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-25773

Vulnerability Information
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Vulnerability Title
Focalboard Second-Order SQL Injection in category reorder endpoint allows data exfiltration (unsupported product, no fix)
Source: CVE Program / CVE List V5
Vulnerability Description
** 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Focalboard 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Focalboard是Mattermost Community开源的一个多语言、自托管的项目管理工具。 Focalboard 8.0版本存在安全漏洞，该漏洞源于对类别ID清理不足，可能导致二阶SQL注入和数据泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mattermost Focalboard 0 ~ 8.0 -

II. Public POCs for CVE-2026-25773

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III. Intelligence Information for CVE-2026-25773

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IV. Related Vulnerabilities

Same product: Focalboard
Same vendor: Mattermost
Same weakness: CWE-89

V. Comments for CVE-2026-25773

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