CVE Watch28 de out. de 2026

CVE-2026-113776

virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiate_templat

CVSS

7.8

Alta

EPSS

0.3%

p19

KEV

—

Exploit Today

0-100

Publicado: 20 de out. de 2026 · Última mod.: 28 de out. de 2026 · CWE-78 · CWE-94

EPSS · 30d

0.2%EPSS · 30 dias0.3%

2026-10-212026-11-07

Descrição técnica

virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiate_template() replaces placeholders one key at a time across the complete activation template, so trigger names such as __VIRTUAL_NAME__, __VIRTUAL_ENV__, or __VIRTUAL_PROMPT__ inside an already substituted and quoted environment path or prompt can be replaced during a later pass. The later value's quoting can close the earlier literal and execute the remaining path when a user activates the environment through bash, fish, xonsh, or activate_this.py. The distinct csh prompt-display token __VIRTUAL_PROMPT_DISPLAY_TCSH__ can instead break the generated script without establishing command execution. The attacker must influence the destination path or --prompt, and a value without a relevant placeholder name does not trigger this mechanism. This issue is fixed in version 21.14.2.

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