{"cve":"CVE-2026-2325","nvd":{"published":"2026-05-18T08:16:13.757","modified":"2026-10-14T20:10:00.190","status":"Analyzed","description":"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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-770"],"references":["https://mattermost.com/security-updates"],"products":["mattermost:mattermost_server"],"source":"nvd","synced_at":"2026-10-19T22:35:16.954578616+00:00"},"epss":{"cve":"CVE-2026-2325","score":0.0024,"percentile":0.14941,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-m3p3-8frq-q7qh","url":"https://osv.dev/vulnerability/GHSA-m3p3-8frq-q7qh","summary":"Mattermost doesn't limit the size of the request body on the start meeting API endpoint","modified":"2026-06-25T23:11:05.117723433Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=11.5.0 <11.5.2"],"fixed":["11.5.2"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=10.11.0 <10.11.14"],"fixed":["10.11.14"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=11.4.0 <11.4.4"],"fixed":["11.4.4"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-msteams-meetings","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-msteams-meetings","ranges":["<1.1.1-0.20260213105619-c5892dd169de"],"fixed":["1.1.1-0.20260213105619-c5892dd169de"]}]},{"id":"GO-2026-5489","url":"https://osv.dev/vulnerability/GO-2026-5489","summary":"Mattermost doesn't limit the size of the request body on the start meeting API endpoint in github.com/mattermost/mattermost-plugin-msteams-meetings","modified":"2026-06-25T23:01:18.280083215Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-msteams-meetings","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-msteams-meetings","ranges":["<1.1.1-0.20260213105619-c5892dd169de"],"fixed":["1.1.1-0.20260213105619-c5892dd169de"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=10.11.0+incompatible <10.11.14+incompatible",">=11.4.0+incompatible <11.4.4+incompatible",">=11.5.0+incompatible <11.5.2+incompatible"],"fixed":["10.11.14+incompatible","11.4.4+incompatible","11.5.2+incompatible"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}