UBUNTU-CVE-2026-102601

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Source
https://ubuntu.com/security/CVE-2026-102601
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102601.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-102601
Upstream
Published
2026-09-29T16:17:00Z
Modified
2026-10-01T00:26:12Z
Severity
  • 3.5 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:16.04:LTS / php-league-flysystem

Package

Name
php-league-flysystem
Purl
pkg:deb/ubuntu/php-league-flysystem?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.15-1
1.0.16-1
1.0.16-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-league-flysystem",
            "binary_version": "1.0.16-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102601.json"

Ubuntu:22.04:LTS / php-league-flysystem

Package

Name
php-league-flysystem
Purl
pkg:deb/ubuntu/php-league-flysystem?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.3-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-league-flysystem",
            "binary_version": "1.1.3-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102601.json"

Ubuntu:24.04:LTS / php-league-flysystem

Package

Name
php-league-flysystem
Purl
pkg:deb/ubuntu/php-league-flysystem?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.10-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-league-flysystem",
            "binary_version": "1.1.10-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102601.json"

Ubuntu:26.04:LTS / php-league-flysystem

Package

Name
php-league-flysystem
Purl
pkg:deb/ubuntu/php-league-flysystem?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.29.1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-league-flysystem",
            "binary_version": "3.29.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102601.json"