{"action":"Upgrade github.com/mattermost/mattermost-plugin-github to 1.0.1-0.20260330164815-c2840e980b3c or later.","affected":[{"fixed":"1.0.1-0.20260330164815-c2840e980b3c","introduced":"0"}],"component":"github.com/mattermost/mattermost-plugin-github","cve_ids":["CVE-2026-4646"],"ecosystem":"Go","epss":0.0025,"exploited":false,"fixed_versions":["1.0.1-0.20260330164815-c2840e980b3c"],"ghsa_id":"GHSA-rmvv-8v8w-rf7x","id":"tcs_01M5KFMZ27WA09Z8KT5Q10RHKY","modified_at":"2026-07-07T16:11:11.164972428Z","published_at":"2026-05-26T13:30:15Z","references":["https://osv.dev/vulnerability/GHSA-rmvv-8v8w-rf7x","https://nvd.nist.gov/vuln/detail/CVE-2026-4646","https://github.com/mattermost/mattermost-plugin-github/commit/c2840e980b3c2bd08db656eaa6a0fe26bcbf4695","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-rmvv-8v8w-rf7x#Go/github.com/mattermost/mattermost-plugin-github","url":"https://osv.dev/vulnerability/GHSA-rmvv-8v8w-rf7x"}],"summary":"Mattermost doesn't validate user-supplied input in API request handlers"}