CVE-2026-113713
virtualenv is a tool for creating isolated virtual python environments.
Does this matter?
Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 4.0
- 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/M
- EPSS
- 0.14% probability · 3th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-377
- Source
- security-advisories@github.com
EPSS moved from 0.1% on 21 October 2026 to 0.1% on 26 October 2026.
References
- https://github.com/pypa/virtualenv/commit/b81995c3feab9e1edb453c75ffc6616e1a77335e
- https://github.com/pypa/virtualenv/pull/3437
- https://github.com/pypa/virtualenv/releases/tag/21.14.10
- https://github.com/pypa/virtualenv/security/advisories/GHSA-4f8h-vr72-p32c
- https://github.com/pypa/virtualenv/security/advisories/GHSA-4f8h-vr72-p32c
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.