What’s Vulnerable › Vulnerabilities
CVE-2023-3615: Lack of server certificate validation in websockets connection
- Severity: high (CVSS 8.1 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: 2023-07-17 · updated 2026-06-17
- Weakness: CWE-295
Description
Mattermost iOS app fails to properly validate the server certificate while initializing the TLS connection allowing a network attacker to intercept the WebSockets connection.
Affected products
- Mattermost App Framework: before 2.5.1 — fixed in 2.5.1
How to fix
Upgrade to a fixed version: Mattermost App Framework 2.5.1. Check the vendor advisory for mitigations.
References
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