What’s Vulnerable › Vulnerabilities
CVE-2018-21265
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.8% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-06-19 · updated 2026-06-17
- Weakness: CWE-732
Description
An issue was discovered in Mattermost Desktop App before 4.0.0. It mishandled the Same Origin Policy for setPermissionRequestHandler (e.g., video, audio, and notifications).
Affected products
- Mattermost Desktop: before 4.0.0 — fixed in 4.0.0
How to fix
Upgrade to a fixed version: Mattermost Desktop 4.0.0. Check the vendor advisory for mitigations.
References
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