{"action":"Upgrade phpoffice/phpspreadsheet to 1.30.4 or later.","affected":[{"fixed":"5.7.0","introduced":"4.0.0"},{"fixed":"3.10.5","introduced":"3.3.0"},{"fixed":"2.4.5","introduced":"2.2.0"},{"fixed":"2.1.16","introduced":"2.0.0"},{"fixed":"1.30.4","introduced":"0"}],"component":"phpoffice/phpspreadsheet","cve_ids":["CVE-2026-40863"],"ecosystem":"Packagist","epss":0.00486,"exploited":false,"fixed_versions":["5.7.0","3.10.5","2.4.5","2.1.16","1.30.4"],"ghsa_id":"GHSA-84wq-86v6-x5j6","id":"tcs_01M5KEYNG5GEDCF25PDRJ57BCN","modified_at":"2026-05-13T16:57:37.364731Z","published_at":"2026-04-29T20:23:27Z","references":["https://osv.dev/vulnerability/GHSA-84wq-86v6-x5j6","https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-84wq-86v6-x5j6","https://nvd.nist.gov/vuln/detail/CVE-2026-40863","https://github.com/PHPOffice/PhpSpreadsheet"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-84wq-86v6-x5j6","url":"https://osv.dev/vulnerability/GHSA-84wq-86v6-x5j6"}],"summary":"PhpSpreadsheet has CPU Denial of Service via Unbounded Row Index in SpreadsheetML XML Reader"}