What’s Vulnerable › Vulnerabilities
CVE-2023-48732: Keywords that trigger mentions are leaked to other users
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-01-02 · updated 2026-06-17
- Weakness: CWE-200
Description
Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.
Affected products
- Mattermost: before 8.1.7 — fixed in 8.1.7
How to fix
Upgrade to a fixed version: Mattermost 8.1.7. Check the vendor advisory for mitigations.
References
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