CVE-2026-113715

2.0 LOW 0.2% exploit odds Fix listed Other Library

What it is

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the stdlib venv creator reads generated pyvenv.cfg with str.splitlines() and merges parsed keys over virtualenv's selected configuration. An untrusted caller who influences the destination pathname can include a line-boundary character such as U+2028 to inject keys including home and include-system-site-packages, causing path data to change configuration structure before final output. Setting include-system-site-packages to true weakens environment isolation, while an altered home can change which standard-library files the interpreter loads if the attacker also controls that location. The builtin creator does not use this readback path. This issue is fixed in version 21.14.9.

At a glance

Exploitability: Can be exploited locally on the machine without logging in, but needs a user to act. Limited direct impact.
Exploit odds: 0.2% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-10-20 20:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-23 02:16 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.2% in the next 30 days (EPSS).
Severity: 2.0 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2026-10-20 20:17 UTC
Last modified: 2026-10-23 02:16 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Weakness: CWE-93
Record status: Undergoing Analysis

Attack profile CVSS 4.0 · 2.0

Attack vector: Local
Complexity: High
Attack requirements: Present
Privileges needed: None
User interaction: Passive
Confidentiality: Low
Integrity: Low
Availability: Low

Raw vector

CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-113715.md and follow it. Check whether this project is affected by CVE-2026-113715. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record