CVE-2024-36255 is a medium-severity vulnerability affecting Mattermost versions 9.5.x up to 9.5.3, 9.6.x up to 9.6.1, and 8.1.x up to 8.1.12. It stems from improper input validation on post actions, allowing an authenticated attacker to execute a playbook checklist task command as another user. This is achieved by crafting a deceptive post action that unexpectedly runs a slash command in an arbitrary channel. The attack requires user interaction (UI:R) and has a CVSS score of 5.7, indicating a high impact on integrity (I:H) but no impact on confidentiality or availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 8.1.0, < 8.1.13CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 9.5.0, < 9.5.4CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 9.6.0, < 9.6.2CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 8.1.0, <= 8.1.12CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | ||
>= 9.5.0, <= 9.5.3CPE 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:R/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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.
Remediation records are not available for this CVE.