{"action":"Upgrade fflate to 0.4.9 or later.","affected":[{"fixed":"0.4.9","introduced":"0.4.5"},{"fixed":"0.5.4","introduced":"0.5.0"},{"fixed":"0.6.11","introduced":"0.6.0"},{"fixed":"0.7.5","introduced":"0.7.0"},{"fixed":"0.8.3","introduced":"0.8.0"}],"component":"fflate","cve_ids":["CVE-2026-45820"],"ecosystem":"npm","epss":0.00279,"exploited":false,"fixed_versions":["0.4.9","0.5.4","0.6.11","0.7.5","0.8.3"],"ghsa_id":"GHSA-px8p-9vwx-vf98","id":"tcs_01M5KG4Q7EQ2W6762MTZEGPZBW","modified_at":"2026-09-10T03:50:52.758792289Z","published_at":"2026-07-22T09:32:13Z","references":["https://osv.dev/vulnerability/GHSA-px8p-9vwx-vf98","https://nvd.nist.gov/vuln/detail/CVE-2026-45820","https://github.com/101arrowz/fflate/commit/e6d5e6e1076892f72770ac732d83c81da9f3316e","https://github.com/101arrowz/fflate","https://github.com/101arrowz/fflate/blob/f7873560ad229c22c4b23b06c6a3806ffde77569/src/index.ts#L2714","https://github.com/101arrowz/fflate/releases/tag/v0.8.3"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-px8p-9vwx-vf98","url":"https://osv.dev/vulnerability/GHSA-px8p-9vwx-vf98"}],"summary":"fflate unzipSync can enter an infinite loop when parsing malformed ZIP64 archives"}