How severe is CVE-2026-22702?

CVE-2026-22702 has a CVSS 3.x base score of 4.5, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-22702 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22702?

CVE-2026-22702 affects Virtualenv. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22702?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-22702 have an EU (EUVD) identifier?

Yes. CVE-2026-22702 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1869.

When was CVE-2026-22702 published?

CVE-2026-22702 was published on 2026-01-10 and last updated on 2026-06-17.

CVE-2026-22702

CVE-2026-22702 is a medium-severity vulnerability in Virtualenv with a CVSS 3.x base score of 4.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.

Key facts

Severity: Medium (CVSS 3.x base score 4.5)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-1869
Weakness: CWE-59
Affected product: Virtualenv
Published: 2026-01-10
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-22702?: CVE-2026-22702 has a CVSS 3.x base score of 4.5, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-22702 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22702?: CVE-2026-22702 affects Virtualenv. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22702?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-22702 have an EU (EUVD) identifier?: Yes. CVE-2026-22702 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1869.
When was CVE-2026-22702 published?: CVE-2026-22702 was published on 2026-01-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:virtualenv:virtualenv:*:*:*:*:*:*:*:*

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