PT-2020-8434 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2026-01-06 · CVE-2017-18888

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Mattermost Server versions prior to 4.3.0 Mattermost Server version 4.2.1 Mattermost Server version 4.1.2

Description: An issue was discovered in Mattermost Server that allows SQL injection during the fetching of multiple posts.

Recommendations: For versions prior to 4.3.0, update to version 4.3.0 or later. For version 4.2.1, update to version 4.3.0 or later. For version 4.1.2, update to version 4.3.0 or later.

Fix

SQL injection

Weakness Enumeration

CWE-89

Related Identifiers

CVE-2017-18888

GHSA-V2VM-HQ26-5JV6

GO-2025-4203

SUSE-SU-2026:0037-1

Affected Products

Mattermost Server

References · 85

• https://osv.dev/vulnerability/SUSE-SU-2026:0037-1 · Vendor Advisory
• https://mattermost.com/security-updates · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-18888 · Security Note
• https://osv.dev/vulnerability/CVE-2017-18888 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2025-4203 · Vendor Advisory
• https://github.com/advisories/GHSA-v2vm-hq26-5jv6 · Note
• https://suse.com/security/cve/CVE-2017-18889 · Note
• https://suse.com/security/cve/CVE-2025-0426 · Note
• https://suse.com/security/cve/CVE-2025-68938 · Note
• https://suse.com/security/cve/CVE-2017-18886 · Note
• https://suse.com/security/cve/CVE-2025-34430 · Note
• https://suse.com/security/cve/CVE-2025-62190 · Note
• https://suse.com/security/cve/CVE-2024-41260 · Note
• https://suse.com/security/cve/CVE-2025-47913 · Note
• https://suse.com/security/cve/CVE-2017-18888 · Note