CVE-2026-113717— virtualenv: Pip seeding with download omits wheel digest verification
Quick assessment
Affected
pypa virtualenv
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
virtualenv 是一个用于创建隔离的虚拟 Python 环境的工具。在 21.14.9 版本之前， 在处理 参数时，会调用 ，随后允许 pip 查询已配置的包索引。这一流程绕过了 virtualenv 自身的 和 路径。当 virtualenv 默认启用的 PyPI 摘要（digest）比对功能仍然处于激活状态时，若某个索引候选项与捆绑的包及其版本匹配，系统便可能在不与 PyPI 的 SHA-256 元数据进行比对的情况下选择该候选项。显式配置的自定义索引已默认退出该比对流程，因此不属于本绕过验证问题的范围；
Possible ATT&CK Techniques 2 AI
T1587 · Develop Capabilities T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| pypa | virtualenv | < 21.14.9 |
affected |
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I. Basic Information for CVE-2026-113717
Vulnerability Information
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Vulnerability Title
virtualenv: Pip seeding with download omits wheel digest verification
Source: CVE Program / CVE List V5
Vulnerability Description
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, PipInvoke.get_pip_install_cmd() handles --seeder pip --download by calling get_wheel(download=False) and then allowing pip to consult the configured index, bypassing virtualenv's download_wheel() and verify_wheel_digest() path. When virtualenv's default-index PyPI digest comparison remains enabled, an index candidate matching the bundled package and version can therefore be selected without comparison to PyPI SHA-256 metadata. Explicit custom-index settings already opt out of that comparison and remain outside this verification-bypass claim; the demonstrated configuration used a non-PyPI index while leaving the index environment variables unset so the comparison policy remained active. This condition does not independently defeat TLS or establish control of the index response. This issue is fixed in version 21.14.9.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
下载代码缺少完整性检查
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| pypa | virtualenv | < 21.14.9 | - |
|
II. Public POCs for CVE-2026-113717
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-113717 (1)
Vendor Advisories for CVE-2026-113717 (1)
Vendor Pages for CVE-2026-113717 (1)
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Release 21.14.9 · pypa/virtualenv · GitHub x_refsource_MISC
Same Patch Batch · pypa · 2026-10-20 · 16 CVEs total
| CVE-2026-113722 | 7.8 HIGH | virtualenv: Generated POSIX console launchers interpret destination paths as shell syntax |
| CVE-2026-113725 | 7.8 HIGH | virtualenv bash activate runs commands from an environment name with a backslash before $ |
| CVE-2026-113726 | 7.8 HIGH | virtualenv activate runs commands from the environment name in zsh with PROMPT_SUBST |
| CVE-2026-113776 | 7.8 HIGH | virtualenv activation scripts run code from a path that contains a placeholder name |
| CVE-2026-113732 | 7.8 HIGH | virtualenv activate.fish runs commands from a path or prompt with a backslash before a quo |
| CVE-2026-113718 | 7.1 HIGH | virtualenv: Xonsh activation literals depend on the script decoding codec |
| CVE-2026-113723 | 7.1 HIGH | virtualenv: Bash prompt values can change meaning under older compatibility modes |
| CVE-2026-113716 | 4.5 MEDIUM | virtualenv: Builtin creation follows linked environment directories |
| CVE-2026-113719 | 4.5 MEDIUM | virtualenv: Seed replacement does not contain metadata deletion paths |
| CVE-2026-113724 | 4.5 MEDIUM | virtualenv: Deletion recovery can change a symlink target's mode |
| CVE-2026-113721 | 4.5 MEDIUM | virtualenv: Generated files can follow existing destination links |
| CVE-2026-113713 | 4.4 MEDIUM | virtualenv: Temporary app-data can leave dangling seed package links |
| CVE-2026-113720 | 4.4 MEDIUM | virtualenv: Seeded files retain permissions from an older cache |
| CVE-2026-113714 | 2.3 LOW | virtualenv: Downloaded wheel selection and caching precede verification |
| CVE-2026-113715 | 2.0 LOW | virtualenv: Venv configuration readback can reinterpret path boundaries |
IV. Related Vulnerabilities
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CVE-2026-113726
virtualenv activate runs commands from the environment name -
CVE-2026-113776
virtualenv activation scripts run code from a path that cont -
CVE-2026-113732
virtualenv activate.fish runs commands from a path or prompt -
CVE-2026-113725
virtualenv bash activate runs commands from an environment n -
CVE-2026-113724
virtualenv: Deletion recovery can change a symlink target's
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CVE-2026-113726
virtualenv activate runs commands from the environment name -
CVE-2026-113776
virtualenv activation scripts run code from a path that cont -
CVE-2026-113732
virtualenv activate.fish runs commands from a path or prompt -
CVE-2026-113725
virtualenv bash activate runs commands from an environment n -
CVE-2026-113724
virtualenv: Deletion recovery can change a symlink target's
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V. Comments for CVE-2026-113717
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