CVE-2017-18871 is a denial-of-service vulnerability affecting Mattermost Server versions prior to 4.5.0, 4.4.5, 4.3.4, and 4.2.2. An unauthenticated attacker can crash the application by sending a specially crafted request containing an '@' character before a JavaScript field name. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity and high impact on availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.2.2CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 4.3.0, < 4.3.4CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 4.4.0, < 4.4.5CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
4.5.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:4.5.0:rc1:*:*:*:*:*:* | ||
4.5.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:4.5.0:rc2:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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.