CVE-2017-18889 describes an issue in Mattermost Server versions prior to 4.3.0, 4.2.1, and 4.1.2, where an attacker could craft fake system-message posts using webhooks and slash commands through the v3 or v4 REST API. This vulnerability carries a CVSS score of 4.3 (MEDIUM), indicating a low attack complexity and requiring low privileges, with a potential impact of low integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.1.2CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 4.2.0, < 4.2.1CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
4.3.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc1:*:*:*:*:*:* | ||
4.3.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc2:*:*:*:*:*:* | ||
4.3.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:4.3.0:rc3:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.