{"schema_version":"1","data":[{"id":3805,"advisory_id":"83775ac5-da03-4986-b7a5-7184553cc594","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102601","source_published_at":"2026-09-29T15:26:42.044+00:00","published_at":"2026-10-24T21:40:55.738678+00:00","extraction_method":"structured","technologies":["core-cve","flysystem"],"cve_ids":["CVE-2026-102601"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Flysystem: WhitespacePathNormalizer's control-character (CorruptedPathDetected) check is bypassed by malformed UTF-8 in the path, affecting every adapter","summary":"Flysystem is an open source file storage library for PHP. Prior to 3.35.3, the default WhitespacePathNormalizer in src/WhitespacePathNormalizer.php used by Filesystem across adapters calls preg_match with the u modifier and treats both false and 0 as falsy. A path containing malformed UTF-8 causes PCRE to return false, so paths that also contain control characters bypass CorruptedPathDetected::forPath() in normalizePath(). Filesystem::write() can store such names and Filesystem::listContents() can return the raw ANSI escape sequences, allowing hidden or spoofed terminal file listings when an administrator displays them. This issue is fixed in version 3.35.3.","evidence":"cve:CVE-2026-102601","products":[{"name":{"value":"flysystem","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"low","structured":{"id":"CVE-2026-102601","aliases":["CVE-2026-102601"],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":3.5,"attackVector":"NETWORK","baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"NONE"}}],"affected":[{"vendor":"thephpleague","product":"flysystem","versions":[{"status":"affected","version":"< 3.35.3"}]}],"modified":"2026-09-29T16:02:04.360Z","provider":"cve","references":["https://github.com/thephpleague/flysystem/security/advisories/GHSA-cxf4-7mrp-vvpr","https://github.com/thephpleague/flysystem/commit/ef4a9a557d769b5d472c403125716706a0d9cc77","https://github.com/thephpleague/flysystem/releases/tag/3.35.3"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102601","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-29T16:01:15.275868Z"}}}],"references":[{"url":"https://github.com/thephpleague/flysystem/security/advisories/GHSA-cxf4-7mrp-vvpr","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-29T16:02:04.360Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-29T15:26:42.044Z"}}},"related_cves":[{"value":"CVE-2026-102601","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"},"priority":{"reasons":[],"severity":"low","linked_cves":[],"fix_available":false,"known_exploited":false,"publisher_severity":"low"},"context_update":false}],"next_after":3805,"next_before":3805}