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DEBIAN-CVE-2026-102601

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-102601

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-102601

php-league-flysystem

Source reference: /affected/0/package/name

Affected versions
1.1.10-1

Source reference: /affected/0/versions

1.1.10-2

Source reference: /affected/0/versions

3.28.0-1

Source reference: /affected/0/versions

3.29.1-1

Source reference: /affected/0/versions

3.29.1-2

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

php-league-flysystem

Source reference: /affected/1/package/name

Affected versions
3.29.1-2

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

php-league-flysystem

Source reference: /affected/2/package/name

Affected versions
3.29.1-2

Source reference: /affected/2/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "php-league-flysystem",
      "purl": "pkg:deb/debian/php-league-flysystem?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.1.10-1",
      "1.1.10-2",
      "3.28.0-1",
      "3.29.1-1",
      "3.29.1-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102601.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "php-league-flysystem",
      "purl": "pkg:deb/debian/php-league-flysystem?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.29.1-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102601.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "php-league-flysystem",
      "purl": "pkg:deb/debian/php-league-flysystem?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.29.1-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102601.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#59574 · Revision 1
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Publisher date
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