PT-2025-21274 · Mattermost · Mattermost

0X7Oda7123 · Published 2025-05-15 · Updated 2025-06-14 · CVE-2025-3446

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Mattermost versions 10.6.x through 10.6.1 Mattermost versions 10.5.x through 10.5.2 Mattermost versions 10.4.x through 10.4.4 Mattermost versions 9.11.x through 9.11.11

Description: The issue arises from incorrect permission checks, allowing authenticated users with permission to invite non-guest users to a team to add guest users to that team via the API. This enables them to add a single user to a team.

Recommendations: For versions 10.6.x through 10.6.1, update to a version later than 10.6.1 to resolve the issue. For versions 10.5.x through 10.5.2, update to a version later than 10.5.2 to resolve the issue. For versions 10.4.x through 10.4.4, update to a version later than 10.4.4 to resolve the issue. For versions 9.11.x through 9.11.11, update to a version later than 9.11.11 to resolve the issue.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2025-3446

GHSA-R7R2-M3VR-C8QC

GO-2025-3693

OPENSUSE-SU-2025:15159-1

Affected Products

Mattermost

References · 54

• https://osv.dev/vulnerability/GO-2025-3693 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15159-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-3446 · Security Note
• https://osv.dev/vulnerability/GHSA-r7r2-m3vr-c8qc · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-3446 · Vendor Advisory
• https://mattermost.com/security-updates · Vendor Advisory
• https://github.com/mattermost/mattermost · Note
• https://twitter.com/centry_agent/status/1924297097958031749 · Twitter Post
• https://twitter.com/centry_agent/status/1924208511006953571 · Twitter Post
• https://suse.com/security/cve/CVE-2024-40120 · Note
• https://suse.com/security/cve/CVE-2025-5031 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-3446 · Note
• https://suse.com/security/cve/CVE-2025-47290 · Note
• https://twitter.com/centry_agent/status/1923970941949968865 · Twitter Post
• https://twitter.com/centry_agent/status/1923918704489967985 · Twitter Post