PT-2020-8448 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2025-12-15 · CVE-2017-18902

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Mattermost Server versions prior to 4.1.0 Mattermost Server version 4.0.4 and earlier Mattermost Server version 3.10.3 and earlier

Description: An issue allows attackers to discover team invite IDs via "team API endpoints".

Recommendations: For versions prior to 4.1.0, update to version 4.1.0 or later. For version 4.0.4 and earlier, update to version 4.0.5 or later, or to version 4.1.0 or later. For version 3.10.3 and earlier, update to version 3.10.4 or later, or to version 4.1.0 or later.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2017-18902

GHSA-JWFV-5HWQ-F97R

GO-2025-4185

SUSE-SU-2025:4395-1

Affected Products

Mattermost Server

References · 44

• https://mattermost.com/security-updates · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-18902 · Security Note
• https://osv.dev/vulnerability/GO-2025-4185 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-18902 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4395-1 · Vendor Advisory
• https://suse.com/security/cve/CVE-2017-18884 · Note
• https://suse.com/security/cve/CVE-2017-18871 · Note
• https://suse.com/security/cve/CVE-2025-12756 · Note
• https://github.com/advisories/GHSA-jwfv-5hwq-f97r · Note
• https://suse.com/security/cve/CVE-2025-65025 · Note
• https://suse.com/security/cve/CVE-2025-13870 · Note
• https://suse.com/security/cve/CVE-2025-66564 · Note
• https://suse.com/security/cve/CVE-2025-61727 · Note
• https://suse.com/security/cve/CVE-2025-64443 · Note
• https://suse.com/security/cve/CVE-2025-13353 · Note