CVE-2017-18877: An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS attacks could occur against an OAuth 2.0 allow/deny page.

PriorityP423medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

EPSS

0.69%

48.8th percentile

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS attacks could occur against an OAuth 2.0 allow/deny page.

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 < 4.2.1	4.2.1
github.com	mattermost_mattermost-server	>= 4.2.0+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	—	—
mattermost	mattermost_server	>= 4.1.0 < 4.1.2	4.1.2
mattermost	mattermost_server	>= 4.2.0 < 4.2.1	4.2.1

CVSS provenance

nvdv3.16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

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