What’s Vulnerable › Vulnerabilities
CVE-2024-52032: Private channel names leaking when Elasticsearch is enabled
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-11-09 · updated 2026-06-17
- Weakness: CWE-200
Description
Mattermost versions 10.0.x <= 10.0.0 and 9.11.x <= 9.11.2 fail to properly query ElasticSearch when searching for the channel name in channel switcher which allows an attacker to get private channels names of channels that they are not a member of, when Elasticsearch v8 was enabled.
Affected products
- Mattermost: from 9.11.0 before 9.11.3; 10.0.0, 10.0.0-rc1, 10.0.0-rc2, 10.0.0-rc3, 10.0.0-rc4 — fixed in 9.11.3
How to fix
Upgrade to a fixed version: Mattermost 9.11.3. Check the vendor advisory for mitigations.
References
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