CVE-2026-113723
Prior to 21.14.9, caller-supplied prompt text can become executable syntax in the bash activation prompt.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, caller-supplied prompt text can become executable syntax in the bash activation prompt. An attacker must influence the value passed to virtualenv, and a user must subsequently activate the environment and draw the prompt. This vulnerability is fixed in 21.14.9.
- CVSS 4.0
- 7.1 HIGHCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/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
- 0.18% probability · 7th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Source
- security-advisories@github.com
EPSS moved from 0.1% on 21 October 2026 to 0.2% on 26 October 2026.
References
- https://github.com/pypa/virtualenv/commit/5f48d711731311428aebfae61d46957762155b22
- https://github.com/pypa/virtualenv/pull/3418
- https://github.com/pypa/virtualenv/releases/tag/21.14.9
- https://github.com/pypa/virtualenv/security/advisories/GHSA-6w3r-xr62-4xcp
- https://github.com/pypa/virtualenv/security/advisories/GHSA-6w3r-xr62-4xcp
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.