{"action":"Upgrade h3 to 2.0.1-rc.9 or later.","affected":[{"fixed":"2.0.1-rc.9","introduced":"2.0.0-beta.0"}],"component":"h3","cve_ids":["CVE-2026-33129"],"ecosystem":"npm","epss":0.00324,"exploited":false,"fixed_versions":["2.0.1-rc.9"],"ghsa_id":"GHSA-26f5-8h2x-34xh","id":"tcs_01M5KES4AZBVQRZJS4XKV1NQ6H","modified_at":"2026-03-20T21:35:11.362620Z","published_at":"2026-03-18T16:17:58Z","references":["https://osv.dev/vulnerability/GHSA-26f5-8h2x-34xh","https://github.com/h3js/h3/security/advisories/GHSA-26f5-8h2x-34xh","https://nvd.nist.gov/vuln/detail/CVE-2026-33129","https://github.com/h3js/h3/pull/1283","https://github.com/h3js/h3","https://github.com/h3js/h3/releases/tag/v2.0.1-rc.9"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"GHSA-26f5-8h2x-34xh","url":"https://osv.dev/vulnerability/GHSA-26f5-8h2x-34xh"}],"summary":"h3 has an observable timing discrepancy in basic auth utils"}