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CVE-2026-113714— virtualenv: Downloaded wheel selection and caching precede 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 Python 虚拟环境的工具。在 21.14.8 到 21.14.9 版本期间， 函数在从 pip 的文本化“已保存输出”（Saved output）中选择验证目标之前，会将包索引下载的内容直接写入可重用的 wheel/house 缓存。当启用了默认索引的摘要（digest）比对时，受控的包索引可以通过被丢弃链接的 属性注入一条误导性的"Saved"行；这种伪造行变体还需要攻击者知晓真实捆绑 wheel 的绝对路径。随后，系统会对错误的路径进行哈希计算，而摘要不匹配会导致

CVSS 2.3 · Low

Affected Version Matrix 1

VendorProduct Version RangeStatus
pypa virtualenv < 21.14.9 affected
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I. Basic Information for CVE-2026-113714

Vulnerability Information
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Vulnerability Title
virtualenv: Downloaded wheel selection and caching precede verification
Source: CVE Program / CVE List V5
Vulnerability Description
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, download_wheel() writes package-index downloads directly into the reusable wheel/house cache before selecting a verification target from pip's textual Saved output. With default-index digest comparison enabled, a controlled package index can inject a misleading Saved line through a discarded link's data-requires-python attribute; this forged-line variant also requires knowledge of an absolute path to the genuine bundled wheel. The wrong path can then be hashed, while a digest mismatch leaves the rejected archive in the cache for later selection without verification. A separate rejected-cache-file variant requires control over downloaded data or archive selection but not the forged-line prerequisites. Explicit custom-index exceptions are outside the promised PyPI comparison, and the issue does not independently bypass TLS or establish control of default PyPI. 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
完整性检查值验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
pypa virtualenv < 21.14.9 -

II. Public POCs for CVE-2026-113714

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III. Intelligence Information for CVE-2026-113714

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Patches & Fixes for CVE-2026-113714 (1)

Vendor Advisories for CVE-2026-113714 (1)

Vendor Pages for CVE-2026-113714 (1)

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-2026-113717 2.3 LOW virtualenv: Pip seeding with download omits wheel digest verification
CVE-2026-113715 2.0 LOW virtualenv: Venv configuration readback can reinterpret path boundaries

IV. Related Vulnerabilities

Same product: virtualenv
Same vendor: pypa
Same weakness: CWE-354

V. Comments for CVE-2026-113714

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