CVE-2026-3636
Analyzed Analyzed - Analysis Complete
BaseFortify

Publication date: 2026-05-22

Last updated on: 2026-05-22

Assigner: Mattermost, Inc.

Description
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to sanitize team member data when returned via API to users without elevated permissions which allows a user without permissions to get data about team members roles via invoking various team API endpoints.. Mattermost Advisory ID: MMSA-2026-00626
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-05-22
Last Modified
2026-05-22
Generated
2026-06-15
EPSS Evaluated
2026-06-14
NVD
CVE-2026-3636
EUVD
EUVD-2026-31428
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
mattermost mattermost_server From 10.11.0 (inc) to 10.11.15 (exc)
mattermost mattermost_server From 11.4.0 (inc) to 11.4.5 (exc)
mattermost mattermost_server From 11.5.0 (inc) to 11.5.4 (exc)
mattermost mattermost_server From 11.6.0 (inc) to 11.6.1 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
AI Quick Actions have not been generated yet.
Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-3636. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart