What’s Vulnerable › Vulnerabilities
CVE-2023-1777: Information disclosure in linked message previews
- Severity: medium (CVSS 5.3 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: 2023-03-31 · updated 2026-06-17
- Weakness: CWE-200
Description
Mattermost allows an attacker to request a preview of an existing message when creating a new message via the createPost API call, disclosing the contents of the linked message.
Affected products
- Mattermost: before 7.1.6; 7.7.1, 7.8.0 — fixed in 7.1.6
How to fix
Upgrade to a fixed version: Mattermost 7.1.6. Check the vendor advisory for mitigations.
References
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