CVE-2026-22701 Vulnerability Analysis & Exploit Details

CVE-2026-22701
Vulnerability Scoring

5.3
/10
Significant Risk

Security assessments indicate that CVE-2026-22701 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: High
    Exploits require significant effort and special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-22701 Details

Status: Analyzed

Last updated: 🕜 05 Mar 2026, 13:50 UTC
Originally published on: 🕕 10 Jan 2026, 06:15 UTC

Time between publication and last update: 54 days

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

CVE-2026-22701 Vulnerability Summary

CVE-2026-22701: 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.

Assessing the Risk of CVE-2026-22701

Access Complexity Graph

The exploitability of CVE-2026-22701 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-22701

This vulnerability, CVE-2026-22701, requires a high level of attack complexity and low privileges, making it difficult but not impossible to exploit. Organizations should ensure robust security configurations to mitigate risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-22701, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-22701, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2026-22701 has no significant impact on data confidentiality.
  • Integrity: Low
    Exploiting CVE-2026-22701 may cause minor changes to data without severely impacting its accuracy.
  • Availability: High
    CVE-2026-22701 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-22701 References

External References

CWE Common Weakness Enumeration

CWE-367

CAPEC Common Attack Pattern Enumeration and Classification

  • Leveraging Race Conditions via Symbolic Links CAPEC-27 This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions CAPEC-29 This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.

Vulnerable Configurations

  • cpe:2.3:a:tox-dev:filelock:1.0.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:1.0.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:1.0.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:1.0.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:1.0.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:1.0.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:1.0.3:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:1.0.3:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.3:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.3:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.4:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.4:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.5:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.5:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.6:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.6:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.7:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.7:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.8:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.8:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.9:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.9:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.10:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.10:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.11:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.11:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.12:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.12:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:2.0.13:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:2.0.13:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.3:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.3:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.4:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.4:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.5:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.5:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.6:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.6:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.7:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.7:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.8:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.8:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.9:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.9:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.10:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.10:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.0.12:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.0.12:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.1.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.1.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.2.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.2.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.2.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.2.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.3.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.3.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.3.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.3.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.3.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.3.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.4.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.4.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.4.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.4.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.4.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.4.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.5.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.5.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.5.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.5.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.6.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.6.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.7.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.7.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.7.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.7.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.8.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.8.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.8.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.8.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.8.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.8.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.9.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.9.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.9.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.9.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.10.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.10.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.10.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.10.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.10.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.10.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.10.3:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.10.3:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.10.4:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.10.4:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.10.5:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.10.5:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.10.6:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.10.6:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.10.7:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.10.7:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.11.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.11.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.12.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.12.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.12.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.12.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.12.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.12.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.12.3:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.12.3:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.12.4:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.12.4:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.13.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.13.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.13.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.13.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.13.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.13.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.13.3:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.13.3:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.13.4:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.13.4:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.14.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.14.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.15.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.15.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.15.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.15.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.15.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.15.2:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.15.3:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.15.3:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.15.4:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.15.4:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.16.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.16.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.16.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.16.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.17.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.17.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.18.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.18.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.19.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.19.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.19.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.19.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.20.0:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.20.0:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.20.1:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.20.1:*:*:*:*:python:*:*
  • cpe:2.3:a:tox-dev:filelock:3.20.2:*:*:*:*:python:*:*
    cpe:2.3:a:tox-dev:filelock:3.20.2:*:*:*:*:python:*:*

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