CVE-2026-22545 — Incorrect Authorization in Mattermost Mattermost-server

CWE-863 — Incorrect Authorization6 documents5 sources
Severity
3.5LOWNVD
CNA3.1
EPSS
0.0%
top 88.15%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Github.com Mattermost Mattermost-serverGithub.com Mattermost Mattermost Server V8Mattermost Server+1 more
Timeline
PublishedMar 16
Latest updateMar 23

Description

Mattermost versions 10.11.x <= 10.11.10 fail to validate user's authentication method when processing account auth type switch which allows an authenticated attacker to change account password without confirmation via falsely claiming a different auth provider.. Mattermost Advisory ID: MMSA-2026-00583

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:NExploitability: 2.1 | Impact: 1.4

Affected Packages4 packages

▶NVDmattermost/mattermost_server10.11.0 — 10.11.11
▶Gogithub.com/mattermost_mattermost-server10.11.0-rc1+incompatible — 10.11.11+incompatible+6
▶Gogithub.com/mattermost_mattermost_server_v8< 8.0.0-20260127144908-ced9a56e3988
▶CVEListV5mattermost/mattermost10.11.0 — 10.11.10

🔴Vulnerability Details

4
OSV
Mattermost fails to validate user's authentication method when processing account auth type switch in github.com/mattermost/mattermost-server↗2026-03-23
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CVEList
Password Change Bypass via Auth Switch Endpoint↗2026-03-16
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OSV
Mattermost fails to validate user's authentication method when processing account auth type switch↗2026-03-16
▶
GHSA
Mattermost fails to validate user's authentication method when processing account auth type switch↗2026-03-16
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-22545 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-22545 — Incorrect Authorization | cvebase