CVE-2026-113713

virtualenv: Temporary app-data can leave dangling seed package links

virtualenv is a tool for creating isolated virtual python environments. From 21.14.8 until 21.14.10, the app-data seeder can leave an environment linked to temporary package files that virtualenv deletes when creation finishes. The environment-variable and configuration-file forms of symlink_app_data can enable this state even though the command-line flag is disabled for temporary app-data. The resulting environment depends on a cache pathname that its owner no longer controls. This issue is fixed in version 21.14.10.

Affected

pypa · virtualenv

CVSS v4.0 GITHUB

4.4 MEDIUMCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v4.0 GitHub

4.4 MEDIUMCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

EPSS

0.20% chance of exploitation in the next 30 days, 10th percentile

Published

2026-10-20

Updated

2026-10-27

Proof-of-concept exploits (1)

• advisories/GHSA-4f8h-vr72-p32cfind archive

CVE references

• pypa/virtualenv/commit/b81995c3feab9e1edb453c75ffc6616e1a77335eREFERENCE
• pypa/virtualenv/pull/3437REFERENCE
• pypa/virtualenv/releases/tag/21.14.10REFERENCE
• pypa/virtualenv/security/advisories/GHSA-4f8h-vr72-p32cREFERENCE

References

• CVE Record
• NVD entry