{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/84604?format=json","vulnerability_id":"VCID-ewgk-gx1u-ekcz","summary":"Mattermost Plugins versions <=11.3 11.0.3 11.2.2 10.10.11.0 fail to implement authorisation checks on comment block modifications, which allows an authorised attacker with editor permission to modify comments created by other board members.  Mattermost Advisory ID: MMSA-2025-00559","aliases":[{"alias":"CVE-2026-2461"},{"alias":"GHSA-hf8w-x9h5-5gf9"}],"fixed_packages":[],"affected_packages":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-2461","reference_id":"","reference_type":"","scores":[{"value":"0.00042","scoring_system":"epss","scoring_elements":"0.13077","published_at":"2026-06-14T12:55:00Z"},{"value":"0.00042","scoring_system":"epss","scoring_elements":"0.12995","published_at":"2026-06-11T12:55:00Z"},{"value":"0.00042","scoring_system":"epss","scoring_elements":"0.131","published_at":"2026-06-13T12:55:00Z"},{"value":"0.00042","scoring_system":"epss","scoring_elements":"0.13092","published_at":"2026-06-12T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-2461"},{"reference_url":"https://github.com/mattermost/mattermost-plugin-boards","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mattermost/mattermost-plugin-boards"},{"reference_url":"https://github.com/mattermost/mattermost-plugin-boards/commit/57c5be5b6ef59d02dd72e35094d1fae8ba6e9619","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mattermost/mattermost-plugin-boards/commit/57c5be5b6ef59d02dd72e35094d1fae8ba6e9619"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2461","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2461"},{"reference_url":"https://mattermost.com/security-updates","reference_id":"security-updates","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"value":"MODERATE","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/2026-03-16T13:42:41Z/"}],"url":"https://mattermost.com/security-updates"}],"weaknesses":[{"cwe_id":639,"name":"Authorization Bypass Through User-Controlled Key","description":"The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data."}],"exploits":[],"severity_range_score":"4.0 - 6.9","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-ewgk-gx1u-ekcz"}