CVE-2026-102601 (GCVE-0-2026-102601)
Vulnerability from cvelistv5
Published
2026-09-29 15:26
Modified
2026-09-29 16:02
CWE
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
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.
Impacted products
Vendor Product Version
thephpleague flysystem Version: < 3.35.3
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Show details on NVD website


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