Vulnerability · Published Mar 16, 2026 · Assigned by Mattermost
CVE-2026-22545Password Change Bypass via Auth Switch Endpoint
Low 3.1
In plain English
A low-severity incorrect authorization in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 11.2.3 | GHSA-rv67-7w2g-7976 |
| Go | github.com/mattermost/mattermost-server | 5.3.2-0.20260127144908-ced9a56e3988 | GHSA-rv67-7w2g-7976 |
| Go | github.com/mattermost/mattermost-server | 10.11.11 | GHSA-rv67-7w2g-7976 |
| Go | github.com/mattermost/mattermost-server | 11.3.1 | GHSA-rv67-7w2g-7976 |
| Go | github.com/mattermost/mattermost-server | 10.11.11+incompatible, 11.2.3+incompatible, 11.3.1+incompatible | GO-2026-4786 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2026-4786 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2026-4786 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20260127144908-ced9a56e3988 | GO-2026-4786 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20260127144908-ced9a56e3988 | GHSA-rv67-7w2g-7976 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 10.11.0 – through 10.11.10 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
References
- MMSA-2026-00583 vendor-advisory