{"schemaVersion":3,"id":"CVE-2026-2476","aliases":["GHSA-4ppj-6chv-5pgc","GO-2026-4784"],"status":"published","duplicateOf":null,"title":null,"description":"Mattermost Plugins versions <=2.0.3.0 fail to properly mask sensitive configuration values which allows an attacker with access to support packets to obtain original plugin settings via exported configuration data. Mattermost Advisory ID: MMSA-2026-00606","dates":{"published":"2026-03-16T11:11:07.387Z","modified":"2026-03-16T13:49:58.500Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.6,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.6,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":7.6,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N","exploitability":5.9,"impact":7.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00183,"percentile":0.07415,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.003000000000000008,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.0018},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00183,"percentile":0.07415}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0018,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00183,"percentile":0.07415}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor","description":"The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/200.html"}],"affected":[{"vendor":"github.com/mattermost","product":"mattermost-plugin-msteams","name":"github.com/mattermost/mattermost-plugin-msteams","label":"mattermost-plugin-msteams","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/mattermost/mattermost-plugin-msteams","purlType":"golang","versions":[{"text":"< 1.15.1-0.20260102165339-036c761bd3cb","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.15.1-0.20260102165339-036c761bd3cb","eol":null,"hubHref":null},{"vendor":"mattermost","product":"mattermost","name":"Mattermost","label":"mattermost","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.0.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.0.3","eol":null,"hubHref":"/vendor/mattermost/mattermost"},{"vendor":"mattermost","product":"ms_teams","name":"ms teams","label":"ms_teams","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.3.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.3.1","eol":null,"hubHref":"/vendor/mattermost/ms_teams"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://mattermost.com/security-updates","label":"mattermost.com/security-updates","hostname":"mattermost.com","tags":["Vendor Advisory","WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2476","label":"nvd.nist.gov/vuln/detail/CVE-2026-2476","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/mattermost/mattermost-plugin-msteams/commit/036c761bd3cb9ece92c17f2b151dfa906cebdcf6","label":"github.com/mattermost/mattermost-plugin-msteams/commit/036c761bd3cb9ece92c17f2b151dfa906cebdcf6","hostname":"github.com","tags":["WEB","FIX"]},{"url":"https://github.com/mattermost/mattermost-plugin-msteams","label":"github.com/mattermost/mattermost-plugin-msteams","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://github.com/advisories/GHSA-4ppj-6chv-5pgc","label":"github.com/advisories/GHSA-4ppj-6chv-5pgc","hostname":"github.com","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:21483-1","SUSE-SU-2026:1135-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:21483-1","SUSE-SU-2026:1135-1"]},"timeline":[{"kind":"published","date":"2026-03-16T11:11:07.387Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-03-16T13:49:58.500Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T08:25:52.711Z","stale":false,"partial":false}}