{"cve":"CVE-2024-4195","nvd":{"published":"2024-04-26T09:15:12.897","modified":"2026-06-17T08:01:18.480","status":"Analyzed","description":"Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","score":2.7},"cwes":["CWE-284"],"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-2024-4195","score":0.00502,"percentile":0.42985,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5fh7-7mw7-mmx5","url":"https://osv.dev/vulnerability/GHSA-5fh7-7mw7-mmx5","summary":"Mattermost allows team admins to promote guests to team admins","modified":"2024-06-05T16:43:09.434336Z","packages":[{"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":[">=8.1.0 <8.1.12"],"fixed":["8.1.12"]}]},{"id":"GO-2024-2793","url":"https://osv.dev/vulnerability/GO-2024-2793","summary":"Mattermost allows team admins to promote guests to team admins in github.com/mattermost/mattermost-server","modified":"2026-03-03T04:55:17.626009Z","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",">=9.5.0+incompatible <9.5.3+incompatible"],"fixed":["8.1.12+incompatible","9.5.3+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."]}