CVE-2026-2325
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to limit the size of the request body on the start meeting API endpoint, which allows an authenticated attacker to cause resource exhaustion or denial of service via a crafted oversized HTTP POST request to {{/api/v1/meetings}}.. Mattermost Advisory ID: MMSA-2026-00608
- CVSS 3.1
- 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-25)
- CWE
- CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-m3p3-8frq-q7qh | Go | github.com/mattermost/mattermost-server | >=11.5.0 <11.5.2 | 11.5.2 |
| GHSA-m3p3-8frq-q7qh | Go | github.com/mattermost/mattermost-server | >=10.11.0 <10.11.14 | 10.11.14 |
| GHSA-m3p3-8frq-q7qh | Go | github.com/mattermost/mattermost-server | >=11.4.0 <11.4.4 | 11.4.4 |
| GHSA-m3p3-8frq-q7qh | Go | github.com/mattermost/mattermost-plugin-msteams-meetings | <1.1.1-0.20260213105619-c5892dd169de | 1.1.1-0.20260213105619-c5892dd169de |
| GO-2026-5489 | Go | github.com/mattermost/mattermost-plugin-msteams-meetings | <1.1.1-0.20260213105619-c5892dd169de | 1.1.1-0.20260213105619-c5892dd169de |
| GO-2026-5489 | Go | github.com/mattermost/mattermost-server | >=10.11.0+incompatible <10.11.14+incompatible >=11.4.0+incompatible <11.4.4+incompatible >=11.5.0+incompatible <11.5.2+incompatible | 10.11.14+incompatible, 11.4.4+incompatible, 11.5.2+incompatible |