CVE-2017-18894 is a high-severity vulnerability affecting Mattermost Server versions prior to 4.2.0, 4.1.1, and 4.0.5 when configured as an OAuth 2.0 service provider. This flaw allows for resource-owner authorization bypass, potentially leading to account takeover. With a CVSS score of 8.1, it can be exploited remotely with low attack complexity and user privileges, resulting in high confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.0.5CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 4.1.0, < 4.1.1CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
4.2.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:4.2.0:rc1:*:*:*:*:*:* | ||
4.2.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:4.2.0:rc2:*:*:*:*:*:* | ||
4.2.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:4.2.0:rc3:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.