{“lastseen”:””,”description”:”Mattermost versions 11.1.x \\u003c= 11.1.0, 11.0.x \\u003c= 11.0.5, 10.12.x \\u003c= 10.12.3, 10.11.x \\u003c= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.”,”published”:”2025-12-24T08:01:27.157Z”,”modified”:”2025-12-24T08:01:27.157Z”,”type”:”cve”,”title”:”Unauthorized Read Access to Private Channel Posts via Mattermost Jira Plugin”,”source”:”Mattermost”,”references”:”https:\/\/mattermost.com\/security-updates”,”id”:”CVE-2025-13767″,”bulletinFamily”:””,”cwe”:[“CWE-863″],”cvelist”:null,”sourceData”:”Mattermost Mattermost 11.1.0\\nMattermost Mattermost 11.0.0\\nMattermost Mattermost 10.12.0\\nMattermost Mattermost 10.11.0″,”sourceHref”:””,”cvss”:{“score”:4.3,”severity”:”MEDIUM”,”vector”:”CVSS:3.1\/AV:N\/AC:L\/PR:L\/UI:N\/S:U\/C:L\/I:N\/A:N”,”version”:”3.1″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:””,”category_name”:”CVE”,”post_link”:””,”product”:”Mattermost”,”version”:”11.1.0″,”vendor”:”Mattermost”,”ai_description”:””,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"
{“lastseen”:””,”description”:”Mattermost versions 11.1.x \\u003c= 11.1.0, 11.0.x \\u003c= 11.0.5, 10.12.x \\u003c= 10.12.3, 10.11.x \\u003c= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,123,12,21,13,7,11,5],"class_list":["post-32668","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-43","tag-exploit","tag-medium","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n