CVE-2025-13767 is a medium-severity vulnerability affecting Mattermost versions 11.1.0 and earlier, 11.0.5 and earlier, 10.12.3 and earlier, and 10.11.7 and earlier. It allows an authenticated attacker with Jira plugin access to read post content and attachments from channels they are not authorized to access, due to improper validation of user channel membership when attaching Mattermost posts as Jira comments. The vulnerability has a CVSS score of 4.3 (MEDIUM) with a low attack complexity and requires local privileges, resulting in a low impact on confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion, with only one mention and one media article identified.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 10.11.0, < 10.11.8CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 10.12.0, < 10.12.4CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 11.0.0, < 11.0.6CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 11.1.0, < 11.1.1CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 10.11.0, <= 10.11.7CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.