{"action":"Upgrade league/flysystem to 3.35.3 or later.","affected":[{"fixed":"3.35.3","introduced":"0"}],"component":"league/flysystem","cve_ids":["CVE-2026-102601"],"ecosystem":"Packagist","epss":0.00337,"exploited":false,"fixed_versions":["3.35.3"],"ghsa_id":"GHSA-cxf4-7mrp-vvpr","id":"tcs_01M5KF1A8SN2MWMXXFWW8WVN0Q","modified_at":"2026-09-30T21:30:04.116870239Z","published_at":"2026-09-29T18:10:14Z","references":["https://osv.dev/vulnerability/GHSA-cxf4-7mrp-vvpr","https://github.com/thephpleague/flysystem/security/advisories/GHSA-cxf4-7mrp-vvpr","https://nvd.nist.gov/vuln/detail/CVE-2026-102601","https://github.com/thephpleague/flysystem/commit/ef4a9a557d769b5d472c403125716706a0d9cc77","https://github.com/thephpleague/flysystem","https://github.com/thephpleague/flysystem/releases/tag/3.35.3"],"severity":{"label":"low","score":3.5},"sources":[{"source":"osv","source_id":"GHSA-cxf4-7mrp-vvpr","url":"https://osv.dev/vulnerability/GHSA-cxf4-7mrp-vvpr"}],"summary":"Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter"}