Vulnerability · Published Feb 9, 2024 · Assigned by Mattermost
CVE-2024-24776 Incorrect Authorization leads to Channel Member Count Leak
Low 3.1
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 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.3%top 75.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Mattermost fails to check the required permissions in the POST /api/v4/channels/stats/member_count API resulting in channel member counts being leaked to a user without permissions.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 9.3.0+incompatible | GO-2024-2566 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2024-2566 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2024-2566 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.1.8 | GHSA-r833-w756-h5p2 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.3.0 | GHSA-r833-w756-h5p2 |
| Go | github.com/mattermost/mattermost/server/v8 | no fix listed | GO-2024-2566 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 0 – through 8.1.79.4.0 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N