Vulnerability · Published Jun 20, 2025 · Assigned by Mattermost
CVE-2025-3228Unauthorized Guest user access to Playbook
Medium 4.3
In plain English
A medium-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 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.3%top 77.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly retrieve requestorInfo from playbooks handler for guest users which allows an attacker access to the playbook run.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 0.0.0-20250520060012-d0380305ef7a, 10.5.6+incompatible, 10.6.6+incompatible, 10.7.3+incompatible, 10.8.1+incompatible, 9.11.16+incompatible | GO-2025-3771 |
| Go | github.com/mattermost/mattermost-server | 0.0.0-20250520060012-d0380305ef7a | GHSA-4578-6gjh-f2jm |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2025-3771 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2025-3771 |
| Go | github.com/mattermost/mattermost/server/v8 | 10.8.1 | GHSA-4578-6gjh-f2jm |
| Go | github.com/mattermost/mattermost/server/v8 | 10.7.3 | GHSA-4578-6gjh-f2jm |
| Go | github.com/mattermost/mattermost/server/v8 | 10.6.6 | GHSA-4578-6gjh-f2jm |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20250520060012-d0380305ef7a | GO-2025-3771 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20250520060012-d0380305ef7a | GHSA-4578-6gjh-f2jm |
| Go | github.com/mattermost/mattermost/server/v8 | 10.5.6 | GHSA-4578-6gjh-f2jm |
| Go | github.com/mattermost/mattermost/server/v8 | 9.11.16 | GHSA-4578-6gjh-f2jm |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 10.5.0 – through 10.5.59.11.0 – through 9.11.1510.8.010.7.0 – through 10.7.210.6.0 – through 10.6.5 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N