Vulnerability · Published Feb 29, 2024 · Assigned by Mattermost
CVE-2024-1888Existing server guests invited to the team by members without "invite_guest" permission
Medium 4.3
In plain English
A medium-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 26% 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 73.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Mattermost fails to check the "invite_guest" permission when inviting guests of other teams to a team, allowing a member with permissions to add other members but not to add guests to add a guest to a team as long as the guest was already a guest in another team of the server
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 9.2.5+incompatible, 9.3.1+incompatible, 9.4.2+incompatible | GO-2024-2593 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2024-2593 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2024-2593 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.1.9 | GHSA-pfw6-5rx3-xh3c |
| Go | github.com/mattermost/mattermost/server/v8 | 9.4.2 | GHSA-pfw6-5rx3-xh3c |
| Go | github.com/mattermost/mattermost/server/v8 | no fix listed | GO-2024-2593 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.3.1 | GHSA-pfw6-5rx3-xh3c |
| Go | github.com/mattermost/mattermost/server/v8 | 9.2.5 | GHSA-pfw6-5rx3-xh3c |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 0 – through 9.4.10 – through 9.3.00 – through 9.2.40 – through 8.1.8 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N