{"cve":"CVE-2024-4183","nvd":{"published":"2024-04-26T09:15:12.717","modified":"2026-06-17T08:01:17.200","status":"Analyzed","description":"Mattermost versions 8.1.x before 8.1.12, 9.6.x before 9.6.1, 9.5.x before 9.5.3, 9.4.x before 9.4.5 fail to limit the number of active sessions, which allows an authenticated attacker to crash the server via repeated requests to the getSessions API after flooding the sessions table.","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","CWE-400"],"references":["https://mattermost.com/security-updates","https://mattermost.com/security-updates"],"products":["mattermost:mattermost_server"],"source":"nvd","synced_at":"2026-10-19T21:49:08.435428910+00:00"},"epss":{"cve":"CVE-2024-4183","score":0.00611,"percentile":0.49245,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wj37-mpq9-xrcm","url":"https://osv.dev/vulnerability/GHSA-wj37-mpq9-xrcm","summary":"Mattermost fails to limit the number of active sessions","modified":"2025-05-12T21:48:38Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=9.6.0-rc1 <9.6.1"],"fixed":["9.6.1"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=9.5.0 <9.5.3"],"fixed":["9.5.3"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=9.4.0 <9.4.5"],"fixed":["9.4.5"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=8.1.0 <8.1.12"],"fixed":["8.1.12"]}]},{"id":"GO-2024-2798","url":"https://osv.dev/vulnerability/GO-2024-2798","summary":"Mattermost fails to limit the number of active sessions in github.com/mattermost/mattermost-server","modified":"2026-03-03T04:55:18.386573Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=8.1.0+incompatible <8.1.12+incompatible",">=9.4.0+incompatible <9.4.5+incompatible",">=9.5.0+incompatible <9.5.3+incompatible",">=9.6.0-rc1+incompatible <9.6.1+incompatible"],"fixed":["8.1.12+incompatible","9.4.5+incompatible","9.5.3+incompatible","9.6.1+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."]}