Vulnerability · Published Aug 1, 2024 · Assigned by Mattermost
CVE-2024-39837Malicious remote can create arbitrary channels
Low 3.8
In plain English
A low-severity improper access control 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 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.8Low
Exploit odds (30 days)0.3%top 79.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly restrict channel creation which allows a malicious remote to create arbitrary channels, when shared channels were enabled.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 9.5.7+incompatible, 9.9.1+incompatible | GO-2024-3032 |
| Go | github.com/mattermost/mattermost-server | 9.9.1 | GHSA-vvpg-55p7-5h8w |
| Go | github.com/mattermost/mattermost-server | 9.5.7 | GHSA-vvpg-55p7-5h8w |
| Go | github.com/mattermost/mattermost-server/v5 | 5.3.2-0.20240626164322-c758cecaf30c | GHSA-vvpg-55p7-5h8w |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2024-3032 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2024-3032 |
| Go | github.com/mattermost/mattermost-server/v6 | 6.0.0-20240626164322-c758cecaf30c | GHSA-vvpg-55p7-5h8w |
| Go | github.com/mattermost/mattermost/server/v8 | no fix listed | GO-2024-3032 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.9.1 | GHSA-vvpg-55p7-5h8w |
| Go | github.com/mattermost/mattermost/server/v8 | 9.5.7 | GHSA-vvpg-55p7-5h8w |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20240626164322-c758cecaf30c | GHSA-vvpg-55p7-5h8w |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 9.9.09.5.0 – through 9.5.6 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N