Is CVE-2026-2462 actively exploited?

CVE-2026-2462 has no public evidence of in-the-wild exploitation as of 2026-03-18.

What is the CVSS score for CVE-2026-2462?

CVE-2026-2462 has a CVSS score of 6.6 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L.

How do I patch CVE-2026-2462?

Patch guidance is available from mattermost security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-2462.

CVE-2026-2462 - remediation guidance & executive summary

Q: Which products are affected by CVE-2026-2462?

3 products: mattermost mattermost server, mattermost mattermost server, mattermost mattermost server.

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
Attack Vector: network
Complexity: low
Privileges: high
User Action: none
Scope: changed
Confidentiality: low
Integrity: low
Availability: low
Weaknesses: CWE-863 · Incorrect Authorization

Metadata

Primary Vendor: MATTERMOST
Published: 3/16/2026
Last Modified: 3/18/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mattermost : mattermost_servermattermost : mattermost_servermattermost : mattermost_server

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-2462. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-2462

View on NIST NVD

CVE-2026-2462 vulnerability