What’s Vulnerable › Vulnerabilities
CVE-2017-18870
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% 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 Server before 4.5.0, 4.4.5, and 4.3.4. It mishandled webhook access control in the EnableOnlyAdminIntegrations case.
Affected products
- Mattermost: before 4.3.4; from 4.4.0 before 4.4.5; 4.5.0-rc1, 4.5.0-rc2, 4.5.0-rc3, 4.5.0-rc4 — fixed in 4.3.4, 4.4.5
How to fix
Upgrade to a fixed version: Mattermost 4.3.4, 4.4.5. Check the vendor advisory for mitigations.
References
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