Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.5 | Medium | 3.1 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0014, the 3rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:07 UTC First seen by agentprime
- 31 Oct 2026, 14:07 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-558c-9hv2-4prj
- OSV: GHSA-558c-9hv2-4prj
- github.com/pypa/virtualenv/security/advisories/GHSA-558c-9hv2-4prj
- nvd.nist.gov/vuln/detail/CVE-2026-113721
- github.com/pypa/virtualenv/pull/3431
- github.com/pypa/virtualenv/commit/d25f28699eefb1fc34a251e5adf2b5de844c36cd
- github.com/pypa/virtualenv
- github.com/pypa/virtualenv/releases/tag/21.14.9