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CVE-2026-2463

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CVE-2026-2463

Published: Mar 16, 2026

Modified: Mar 16, 2026

PUBLISHED

CVSS v3.1

4.3

MEDIUM

Description

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation.. Mattermost Advisory ID: MMSA-2025-00565

VendorProductVersions

Mattermost

Mattermost

affected
11.3.0 - <= 11.3.0
affected
11.2.0 - <= 11.2.2
affected
10.11.0 - <= 10.11.10
unaffected
11.4.0
unaffected
11.3.1

+2 more versions

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

MMSA-2025-00565
vendor-advisory

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CVE-2026-2463 | MEDIUM (4.3) - Security Vulnerability | QwikSec