Vulnerability Report

CVE-2026-22702

Title: TOCTOU Symlink Race in virtualenv

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-22702.

CWE Category CWE-59
Published Date Jan 10, 2026
Modified Date Feb 18, 2026
Exploit Status Not Found
Score 4.5 CVSS v3.1
Exploit Probability (EPSS)
0.09%

Vulnerability Summary

CVE-2026-22702: virtualenv is a tool for creating isolated virtual python environments. Prior to version 20.36.1, TOCTOU (Time-of-Check-Time-of-Use) vulnerabilities in virtualenv allow local attackers to perform symlink-based attacks on directory creation operations. An attacker with local access can exploit a race condition between directory existence checks and creation to redirect virtualenv's app_data and lock file operations to attacker-controlled locations. This issue has been patched in version 20.36.1.

Impacted Vendors

V
virtualenv 1
P
python 1

Reference Links

https://github.com/pypa/virtualenv/commit/dec4cec5d16edaf83a00a658f32d1e032661cebc https://github.com/pypa/virtualenv/pull/3013 https://github.com/pypa/virtualenv/security/advisories/GHSA-597g-3phw-6986
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.5
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-22702 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected Stack

No specific products linked.