CVE-2017-18876 describes a vulnerability in Mattermost Server versions prior to 4.3.0, 4.2.1, and 4.1.2 when local storage is configured for files. A System Admin can exploit this flaw to test for the existence of arbitrary files on the server. Rated as Medium severity (CVSS 4.9), this vulnerability requires high privileges (PR:H) but has high confidentiality impact (C:H) without affecting integrity or availability. 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:H/UI:N/S:U/C:H/I:N/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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.