CVE-2017-18889: 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…

PriorityP420medium4.3CVSS 3.1

AVNACLPRLUINSUCNILAN

EPSS

0.66%

47.2th percentile

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.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
github.com	mattermost_mattermost-server	>= 0 < 4.1.2	4.1.2
github.com	mattermost_mattermost-server	>= 0 < 4.1.2+incompatible	4.1.2+incompatible
github.com	mattermost_mattermost-server	>= 4.2.0-rc1 < 4.2.1	4.2.1
github.com	mattermost_mattermost-server	>= 4.2.0-rc1+incompatible < 4.2.1+incompatible	4.2.1+incompatible
github.com	mattermost_mattermost-server	>= 4.3.0-rc1 < 4.3.0	4.3.0
github.com	mattermost_mattermost-server	>= 4.3.0-rc1+incompatible < 4.3.0+incompatible	4.3.0+incompatible
mattermost	mattermost_server	< 4.1.2	4.1.2
mattermost	mattermost_server	—	—
mattermost	mattermost_server	>= 4.2.0 < 4.2.1	4.2.1

CVSS provenance

nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:P/A:N

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