Vulnerability · Published Mar 31, 2023 · Assigned by Mattermost
CVE-2023-1775Unsanitized events sent over Websocket to regular users in a High Availability environment
Medium 4.3
In plain English
A medium-severity information exposure 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 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.5%top 54.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
When running in a High Availability configuration, Mattermost fails to sanitize some of the user_updated and post_deleted events broadcast to all users, leading to disclosure of sensitive information to some of the users with currently connected Websocket clients.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 7.1.6 | GHSA-8jhh-3jf2-pfwr |
| Go | github.com/mattermost/mattermost-server | 7.7.2 | GHSA-8jhh-3jf2-pfwr |
| Go | github.com/mattermost/mattermost-server | 7.1.6 | GHSA-8jhh-3jf2-pfwr |
| Go | github.com/mattermost/mattermost-server/v5 | 7.1.6 | GHSA-8jhh-3jf2-pfwr |
| Go | github.com/mattermost/mattermost-server/v6 | 7.1.6 | GHSA-8jhh-3jf2-pfwr |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 3.3.0 – through 7.7.13.3.0 – through 7.1.53.3.0 – before 7.8.0 |
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N