Critical severity · published Jun 19, 2020
CVE-2019-20851
An issue was discovered in Mattermost Mobile Apps before 1.26.0
9.1
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
before 1.26.0; before 1.26.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-20851
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-20851
Vendor Advisory
https://mattermost.com/security-updates/
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