{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/112745?format=json","vulnerability_id":"VCID-6taz-q58r-h3c8","summary":"Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when adding channel members which allows guest users to add any team members to their private channels via the `/api/v4/channels/{channel_id}/members` endpoint","aliases":[{"alias":"CVE-2025-10545"},{"alias":"GHSA-424h-xj87-m937"}],"fixed_packages":[],"affected_packages":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2025-10545","reference_id":"","reference_type":"","scores":[{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.00864","published_at":"2026-06-12T12:55:00Z"},{"value":"9e-05","scoring_system":"epss","scoring_elements":"0.00868","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2025-10545"},{"reference_url":"https://github.com/mattermost/mattermost","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mattermost/mattermost"},{"reference_url":"https://github.com/mattermost/mattermost/commit/fb9c583f5e466a566a5122154ef337bbf2238902","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mattermost/mattermost/commit/fb9c583f5e466a566a5122154ef337bbf2238902"},{"reference_url":"https://github.com/mattermost/mattermost/commit/ff30b84049f0193f0570d30e46cffc3602298c67","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mattermost/mattermost/commit/ff30b84049f0193f0570d30e46cffc3602298c67"},{"reference_url":"https://github.com/mattermost/mattermost/pull/31319","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mattermost/mattermost/pull/31319"},{"reference_url":"https://github.com/mattermost/mattermost/pull/33827","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mattermost/mattermost/pull/33827"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2025-10545","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-10545"},{"reference_url":"https://mattermost.com/security-updates","reference_id":"security-updates","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-10-16T14:13:30Z/"}],"url":"https://mattermost.com/security-updates"}],"weaknesses":[{"cwe_id":863,"name":"Incorrect Authorization","description":"The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions."}],"exploits":[],"severity_range_score":"0.1 - 3.1","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-6taz-q58r-h3c8"}