CVE-2026-113723
published 2026-10-20CVE-2026-113723: 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…
PriorityP427high7.1CVSS 4.0
AVLACHATPPRNUIAVCHVIHVAHSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.18%
7.3th percentile
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.
Affected
25 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ansible-automation-platform-26 | controller-rhel9 | — | — |
| ansible-automation-platform-26 | eda-controller-rhel9 | — | — |
| ansible-automation-platform-26 | lightspeed-chatbot-rhel9 | — | — |
| ansible-automation-platform-27 | controller-rhel9 | — | — |
| ansible-automation-platform-27 | eda-controller-rhel9 | — | — |
| debian | python-virtualenv | — | — |
| devspaces | udi-rhel9 | — | — |
| openshift-lightspeed | lightspeed-service-api-rhel9 | — | — |
| pypa | virtualenv | < 21.14.9 | 21.14.9 |
| rhai-early-access | docling-serve-cuda-rhel9 | — | — |
| rhoai | odh-feature-server-rhel9 | — | — |
| rhoai | odh-kserve-agent-rhel9 | — | — |
| rhoai | odh-kserve-controller-rhel9 | — | — |
| rhoai | odh-kserve-router-rhel9 | — | — |
| rhoai | odh-kserve-storage-initializer-rhel9 | — | — |
| rhoai | odh-ta-lmes-job-rhel9 | — | — |
| rhoai | odh-training-rocm64-torch28-py312-rhel9 | — | — |
| rhoai | odh-trustyai-nemo-guardrails-server-rhel9 | — | — |
| rhoai | odh-workbench-codeserver-datascience-cpu-py312-rhel9 | — | — |
| rhoai | odh-workbench-jupyter-datascience-cpu-py312-rhel9 | — | — |
| rhoai | odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9 | — | — |
| satellite | iop-advisor-backend-rhel9 | — | — |
| satellite | iop-host-inventory-rhel9 | — | — |
| satellite | iop-yuptoo-rhel9 | — | — |
| virtualenv | virtualenv | >= 0 < 21.14.9 | 21.14.9 |
CVSS provenance
nvdv4.07.1HIGHCVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat7.1HIGH
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Red Hat
virtualenv: virtualenv: Arbitrary code execution via malicious prompt text
vendor_redhat·2026-10-20·CVSS 7.1
CVE-2026-113723 [HIGH] CWE-94 virtualenv: virtualenv: Arbitrary code execution via malicious prompt text
virtualenv: virtualenv: Arbitrary code execution via malicious prompt text
A flaw was found in virtualenv. This vulnerability allows arbitrary code execution if an attacker can influence the prompt text provided during environment creation. When a user subsequently activates the environment in a bash shell, the unvalidated prompt text is executed as shell syntax, allowing an attacker to execute commands with the privileges of the activating user.
Mitigation: --- CME Mitigation Guidance (2026-10-20) ---
Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these tempo
GHSA
virtualenv: Bash prompt values can change meaning under older compatibility modes
ghsa·2026-10-23
CVE-2026-113723 [HIGH] CWE-78 virtualenv: Bash prompt values can change meaning under older compatibility modes
virtualenv: Bash prompt values can change meaning under older compatibility modes
## Summary
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.
## Affected area
Bash runs with compatibility level 4.2 and draws the environment prompt. Its replacement-string behavior differs from
newer compatibility modes, leaving prompt text subject to a second interpretation. The report concerns POSIX activation.
It does not establish exposure through unrelated activators.
## Attacker-controlled input
The attacker controls prompt or destination data passed as a virtualenv argument. The user later sources the generated
activation scr
No detection rules found.
No public exploits indexed.
2026-10-20
Published