CVE-2017-18886
High
Mattermost Server does not properly restrict use of slash commands in github.com/mattermost/mattermost-server
Mattermost Server does not properly restrict use of slash commands in github.com/mattermost/mattermost-server
Exploit probability
0.9%
Published
December 15, 2025
Required by
Not available
Last source change
March 3, 2026
02 / AFFECTED SOFTWARE
Affected packages
14 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2017-18886
View original source
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows a bypass of restrictions on use of slash commands.
Open Source Vulnerabilities
GO-2025-4204
View original source
Mattermost Server does not properly restrict use of slash commands in github.com/mattermost/mattermost-server
Open Source Vulnerabilities
GHSA-wvjg-33p9-938h
View original source
An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows a bypass of restrictions on use of slash commands.
05 / REFERENCES