CVE-2026-2462

MEDIUM EPSS 24.6%
Published Mar 16, 20263mo ago · Modified Jun 17, 20262w ago
6.6 CVSS 3.1
Medium
Find Similar
Published Mar 16, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

Description

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to restrict plugin installation on CI test instances with default admin credentials which allows an unauthenticated attacker to achieve remote code execution and exfiltrate sensitive configuration data including AWS and SMTP credentials via uploading a malicious plugin after changing the import directory. Mattermost Advisory ID: MMSA-2025-00528

CVSS Details

Base Score
6.6
Exploitability
2.3
Impact
3.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Changed
Confidentiality Low
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
24.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

Affected Products 3

VendorProductVersionRange
mattermostmattermost_server*≥10.11.0  –  <10.11.11
mattermostmattermost_server*≥11.2.0  –  <11.2.3
mattermostmattermost_server*≥11.3.0  –  <11.3.1

References 1

  • mattermost.com https://mattermost.com/security-updates
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.