What’s Vulnerable › Vulnerabilities
CVE-2019-20851
- Severity: critical (CVSS 9.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.4% 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-22
Description
An issue was discovered in Mattermost Mobile Apps before 1.26.0. An attacker can use directory traversal with the Video Preview feature to overwrite arbitrary files on a device.
Affected products
- Mattermost App Framework: before 1.26.0 — fixed in 1.26.0
How to fix
Upgrade to a fixed version: Mattermost App Framework 1.26.0. Check the vendor advisory for mitigations.
References
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