{"id":"CVE-2026-7521","state":"PUBLISHED","title":"SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory","description":"Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666","publishedAt":"2026-07-28T13:58:31.551Z","updatedAt":"2026-07-28T14:48:13.408Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","source":"Mattermost"},"assigner":"Mattermost","products":["Mattermost Mattermost"],"affected":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"11.8.0","status":"affected","lessThanOrEqual":"11.8.0","versionType":"semver"},{"version":"11.7.0","status":"affected","lessThanOrEqual":"11.7.3","versionType":"semver"},{"version":"11.6.0","status":"affected","lessThanOrEqual":"11.6.5","versionType":"semver"},{"version":"10.11.0","status":"affected","lessThanOrEqual":"10.11.20","versionType":"semver"},{"version":"11.9.0","status":"unaffected"},{"version":"11.8.1","status":"unaffected"},{"version":"11.7.4","status":"unaffected"},{"version":"11.6.6","status":"unaffected"},{"version":"10.11.21","status":"unaffected"}]}],"references":["https://mattermost.com/security-updates"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/7xxx/CVE-2026-7521.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-7521","state":"PUBLISHED","datePublished":"2026-07-28T13:58:31.551Z","dateUpdated":"2026-07-28T14:48:13.408Z","assignerShortName":"Mattermost","assignerOrgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateReserved":"2026-04-30T16:51:23.295Z"},"containers":{"cna":{"title":"SAML certificate deletion allows path traversal to delete arbitrary files outside the config directory","descriptions":[{"lang":"en","value":"Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666"}],"affected":[{"vendor":"Mattermost","product":"Mattermost","defaultStatus":"unaffected","versions":[{"version":"11.8.0","status":"affected","lessThanOrEqual":"11.8.0","versionType":"semver"},{"version":"11.7.0","status":"affected","lessThanOrEqual":"11.7.3","versionType":"semver"},{"version":"11.6.0","status":"affected","lessThanOrEqual":"11.6.5","versionType":"semver"},{"version":"10.11.0","status":"affected","lessThanOrEqual":"10.11.20","versionType":"semver"},{"version":"11.9.0","status":"unaffected"},{"version":"11.8.1","status":"unaffected"},{"version":"11.7.4","status":"unaffected"},{"version":"11.6.6","status":"unaffected"},{"version":"10.11.21","status":"unaffected"}]}],"references":[{"url":"https://mattermost.com/security-updates","name":"MMSA-2026-00666","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"HIGH","version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","baseSeverity":"MEDIUM","baseScore":5.5},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","type":"CWE","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}],"providerMetadata":{"shortName":"Mattermost","orgId":"9302f53e-dde5-4bf3-b2f2-a83f91ac0eee","dateUpdated":"2026-07-28T13:58:31.551Z"},"credits":[{"lang":"en","type":"finder","value":"winfunc"}],"solutions":[{"value":"Update Mattermost to versions 11.9.0, 11.8.1, 11.7.4, 11.6.6, 10.11.21 or higher.","lang":"en"}],"source":{"advisory":"MMSA-2026-00666","defect":["https://mattermost.atlassian.net/browse/MM-68611"],"discovery":"EXTERNAL"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-28T14:47:44.026969Z","id":"CVE-2026-7521","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-28T14:48:13.408Z"}}]}}}