{"action":"Upgrade org.geysermc:connector to 1.4.2-SNAPSHOT or later.","affected":[{"fixed":"1.4.2-SNAPSHOT","introduced":"0"}],"component":"org.geysermc:connector","cve_ids":["CVE-2021-39177"],"ecosystem":"Maven","epss":0.01443,"exploited":false,"fixed_versions":["1.4.2-SNAPSHOT"],"ghsa_id":"GHSA-h77f-xxx7-4858","id":"tcs_01M5N8ZYS0134K7KNTSMGJXARZ","modified_at":"2026-10-01T18:45:07.632931777Z","published_at":"2021-09-07T23:04:04Z","references":["https://osv.dev/vulnerability/GHSA-h77f-xxx7-4858","https://github.com/GeyserMC/Geyser/security/advisories/GHSA-h77f-xxx7-4858","https://nvd.nist.gov/vuln/detail/CVE-2021-39177","https://github.com/GeyserMC/Geyser/commit/b9541505af68ac7b7c093206ac7b1ba88957a5a6","https://github.com/GeyserMC/Geyser","https://updates.playhive.com/changelog/weekend-maintenance-breakdown"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"GHSA-h77f-xxx7-4858","url":"https://osv.dev/vulnerability/GHSA-h77f-xxx7-4858"}],"summary":"User impersonation due to incorrect handling of the login JWT"}