{"apiVersion":"1.0","identifier":"CVE-2026-9693","description":"Mattermost versions 10.11.x <= 10.11.20, 11.7.x <= 11.7.5 Mattermost fails to remove thread membership records when a user is removed from or leaves a team, which allows a previously removed user who is later re-invited to the team to view private channel thread root post content and metadata via the team threads API.. Mattermost Advisory ID: MMSA-2026-00682","publishedAt":"2026-08-17T23:16:52","lastModifiedAt":"2026-08-19T13:14:34","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-9693","cvssScore":3.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","epssProbability":0.00159,"riskScore":0.36,"affectedProduct":"Mattermost","affectedVersions":">=10.11.0,<=10.11.20,>=11.7.0,<=11.7.5","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-9693","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-9693","en":"https://www.redsauce.net/en/cves/CVE-2026-9693","fr":"https://www.redsauce.net/fr/cves/CVE-2026-9693","pt":"https://www.redsauce.net/pt/cves/CVE-2026-9693","de":"https://www.redsauce.net/de/cves/CVE-2026-9693","sk":"https://www.redsauce.net/sk/cves/CVE-2026-9693","el":"https://www.redsauce.net/el/cves/CVE-2026-9693"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-9693"}}