{"cve":"CVE-2026-6347","nvd":{"published":"2026-05-18T09:16:24.143","modified":"2026-10-14T20:10:00.190","status":"Analyzed","description":"Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to sanitize sensitive configuration fields in the Mattermost Calls plugin which allows an attacker with access to a support packet to obtain TURN server credentials via the plaintext values present in the exported plugin configuration.. Mattermost Advisory ID: MMSA-2026-00605","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L","score":7.6},"cwes":["CWE-200"],"references":["https://mattermost.com/security-updates"],"products":["mattermost:mattermost_server"],"source":"nvd","synced_at":"2026-10-19T22:35:16.954578616+00:00"},"epss":{"cve":"CVE-2026-6347","score":0.00266,"percentile":0.18371,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-82j6-4fq7-fx62","url":"https://osv.dev/vulnerability/GHSA-82j6-4fq7-fx62","summary":"Mattermost doesn't sanitize sensitive configuration fields in the Mattermost Calls plugin ","modified":"2026-06-25T19:56:28.676142823Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=11.5.0 <11.5.2"],"fixed":["11.5.2"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=10.11.0 <10.11.14"],"fixed":["10.11.14"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=11.4.0 <11.4.4"],"fixed":["11.4.4"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-calls","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-calls","ranges":["<1.12.0-rc2"],"fixed":["1.12.0-rc2"]}]},{"id":"GO-2026-5238","url":"https://osv.dev/vulnerability/GO-2026-5238","summary":"Mattermost doesn't sanitize sensitive configuration fields in the Mattermost Calls plugin in github.com/mattermost/mattermost-plugin-calls","modified":"2026-06-25T19:45:21.445743555Z","packages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-calls","purl":"pkg:golang/github.com/mattermost/mattermost-plugin-calls","ranges":["<1.12.0-rc2"],"fixed":["1.12.0-rc2"]},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","purl":"pkg:golang/github.com/mattermost/mattermost-server","ranges":[">=10.11.0+incompatible <10.11.14+incompatible",">=11.4.0+incompatible <11.4.4+incompatible",">=11.5.0+incompatible <11.5.2+incompatible"],"fixed":["10.11.14+incompatible","11.4.4+incompatible","11.5.2+incompatible"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}