Medium severity · published Jun 19, 2020
CVE-2017-18889
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2
4.3
CVSS
0.7%
EPSS
No
On KEV
Description
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. An attacker could create fictive system-message posts via webhooks and slash commands, in the v3 or v4 REST API.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
Mattermost Server · Mattermost
before 4.1.2; 4.2.0 before 4.2.1; 4.3.0; 4.3.0; 4.3.0; 4.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18889
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18889
Vendor Advisory
https://mattermost.com/security-updates/
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