filelock-3.16.1-py3-none-any.whl: 2 vulnerabilities (highest severity is: 6.3)

[mend-bolt-for-github]

Vulnerable Library - filelock-3.16.1-py3-none-any.whl

A platform independent file lock.

Library home page: https://files.pythonhosted.org/packages/b9/f8/feced7779d755758a52d1f6635d990b8d98dc0a29fa568bbe0625f18fdf3/filelock-3.16.1-py3-none-any.whl

Path to dependency file: /modules/programming/module_programming_themisml/.ws-temp-JAAXML-requirements.txt

Path to vulnerable library: /home/wss-scanner/.cache/pypoetry/virtualenvs/module-programming-themisml-6JtHFAOJ-py3.11/lib/python3.11/site-packages/filelock-3.16.1.dist-info

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (filelock version)	Remediation Possible**
CVE-2025-68146	Medium	6.3	filelock-3.16.1-py3-none-any.whl	Direct	filelock - 3.20.1	❌
CVE-2026-22701	Medium	5.3	filelock-3.16.1-py3-none-any.whl	Direct	3.20.3	❌

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2025-68146

Vulnerable Library - filelock-3.16.1-py3-none-any.whl

A platform independent file lock.

Library home page: https://files.pythonhosted.org/packages/b9/f8/feced7779d755758a52d1f6635d990b8d98dc0a29fa568bbe0625f18fdf3/filelock-3.16.1-py3-none-any.whl

Path to dependency file: /modules/programming/module_programming_themisml/.ws-temp-JAAXML-requirements.txt

Path to vulnerable library: /home/wss-scanner/.cache/pypoetry/virtualenvs/module-programming-themisml-6JtHFAOJ-py3.11/lib/python3.11/site-packages/filelock-3.16.1.dist-info

Dependency Hierarchy:

• ❌ filelock-3.16.1-py3-none-any.whl (Vulnerable Library)

Found in base branch: develop

Vulnerability Details

filelock is a platform-independent file lock for Python. In versions prior to 3.20.1, a Time-of-Check-Time-of-Use (TOCTOU) race condition allows local attackers to corrupt or truncate arbitrary user files through symlink attacks. The vulnerability exists in both Unix and Windows lock file creation where filelock checks if a file exists before opening it with O_TRUNC. An attacker can create a symlink pointing to a victim file in the time gap between the check and open, causing os.open() to follow the symlink and truncate the target file. All users of filelock on Unix, Linux, macOS, and Windows systems are impacted. The vulnerability cascades to dependent libraries. The attack requires local filesystem access and ability to create symlinks (standard user permissions on Unix; Developer Mode on Windows 10+). Exploitation succeeds within 1-3 attempts when lock file paths are predictable. The issue is fixed in version 3.20.1. If immediate upgrade is not possible, use SoftFileLock instead of UnixFileLock/WindowsFileLock (note: different locking semantics, may not be suitable for all use cases); ensure lock file directories have restrictive permissions (chmod 0700) to prevent untrusted users from creating symlinks; and/or monitor lock file directories for suspicious symlinks before running trusted applications. These workarounds provide only partial mitigation. The race condition remains exploitable. Upgrading to version 3.20.1 is strongly recommended.

Publish Date: 2025-12-16

URL: CVE-2025-68146

CVSS 3 Score Details (6.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: High
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2025-12-16

Fix Resolution: filelock - 3.20.1

Step up your Open Source Security Game with Mend here

CVE-2026-22701

Vulnerable Library - filelock-3.16.1-py3-none-any.whl

A platform independent file lock.

Library home page: https://files.pythonhosted.org/packages/b9/f8/feced7779d755758a52d1f6635d990b8d98dc0a29fa568bbe0625f18fdf3/filelock-3.16.1-py3-none-any.whl

Path to dependency file: /modules/programming/module_programming_themisml/.ws-temp-JAAXML-requirements.txt

Path to vulnerable library: /home/wss-scanner/.cache/pypoetry/virtualenvs/module-programming-themisml-6JtHFAOJ-py3.11/lib/python3.11/site-packages/filelock-3.16.1.dist-info

Dependency Hierarchy:

• ❌ filelock-3.16.1-py3-none-any.whl (Vulnerable Library)

Found in base branch: develop

Vulnerability Details

filelock is a platform-independent file lock for Python. Prior to version 3.20.3, a TOCTOU race condition vulnerability exists in the SoftFileLock implementation of the filelock package. An attacker with local filesystem access and permission to create symlinks can exploit a race condition between the permission validation and file creation to cause lock operations to fail or behave unexpectedly. The vulnerability occurs in the _acquire() method between raise_on_not_writable_file() (permission check) and os.open() (file creation). During this race window, an attacker can create a symlink at the lock file path, potentially causing the lock to operate on an unintended target file or leading to denial of service. This issue has been patched in version 3.20.3.

Publish Date: 2026-01-10

URL: CVE-2026-22701

CVSS 3 Score Details (5.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: High
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-01-10

Fix Resolution: 3.20.3

Step up your Open Source Security Game with Mend here

[mend-bolt-for-github]

✔️ This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.

[mend-bolt-for-github]

ℹ️ This issue was automatically re-opened by Mend because the vulnerable library in the specific branch(es) has been detected in the Mend inventory.