DEBIAN-CVE-2026-102601
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.
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/versions1.1.10-2Source reference:
/affected/0/versions3.28.0-1Source reference:
/affected/0/versions3.29.1-1Source reference:
/affected/0/versions3.29.1-2Source 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
- Added to Heist Feed
- Publisher date