{"cve":"CVE-2026-26304","nvd":{"published":"2026-03-16T20:16:17.730","modified":"2026-06-17T10:26:03.473","status":"Analyzed","description":"Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2 fail to verify run_create permission for empty playbookId, which allows team members to create unauthorized runs via the playbook run API. Mattermost Advisory ID: MMSA-2025-00542","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:L/A:N","score":4.3},"cwes":["CWE-863"],"references":["https://mattermost.com/security-updates"],"products":["mattermost:mattermost_server"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-26304","score":0.00165,"percentile":0.05727,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-4pmx-622h-x359","url":"https://osv.dev/vulnerability/GHSA-4pmx-622h-x359","summary":"Mattermost fails to verify run_create permission for empty playbookId","modified":"2026-03-23T18:56:00.735617Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-playbooks","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-playbooks","ranges":["<1.41.1-0.20260316224925-705f54a81841"],"fixed":["1.41.1-0.20260316224925-705f54a81841"]}]},{"id":"GO-2026-4812","url":"https://osv.dev/vulnerability/GO-2026-4812","summary":"Mattermost fails to verify run_create permission for empty playbookId in github.com/mattermost/mattermost-plugin-playbooks","modified":"2026-03-23T18:45:20.022236Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-playbooks","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-playbooks","ranges":["<1.41.1-0.20260316224925-705f54a81841"],"fixed":["1.41.1-0.20260316224925-705f54a81841"]}]}],"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."]}