CVE-2025-35965 impacts Mattermost versions 10.4.x up to 10.4.2, 10.5.x up to 10.5.0, and 9.11.x up to 9.11.10, stemming from insufficient validation of task actions in the UpdateRunTaskActions GraphQL operation. This vulnerability allows an unauthenticated attacker to trigger a denial-of-service (DoS) condition by creating an excessive number of task actions, overloading the server. Rated with a CVSS score of 7.5 (HIGH), it presents a low-complexity attack vector with a high impact on availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 9.11.0, < 9.11.11CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 10.4.0, < 10.4.3CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
10.5.0CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:10.5.0:-:*:*:*:*:*:* | ||
>= 10.4.0, <= 10.4.2CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | ||
>= 9.11.0, <= 9.11.10CPE 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: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.