{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-113776", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-20T17:39:41.371Z", "datePublished": "2026-10-20T22:03:18.274Z", "dateUpdated": "2026-10-20T22:03:18.274Z"}, "containers": {"cna": {"title": "virtualenv activation scripts run code from a path that contains a placeholder name", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-94", "lang": "en", "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/pypa/virtualenv/security/advisories/GHSA-8rjx-v5ww-45pp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-8rjx-v5ww-45pp"}, {"name": "https://github.com/pypa/virtualenv/commit/602b26623a724827ff171bf11fef4ad186d01f74", "tags": ["x_refsource_MISC"], "url": "https://github.com/pypa/virtualenv/commit/602b26623a724827ff171bf11fef4ad186d01f74"}, {"name": "https://github.com/pypa/virtualenv/releases/tag/21.14.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/pypa/virtualenv/releases/tag/21.14.2"}], "affected": [{"vendor": "pypa", "product": "virtualenv", "versions": [{"version": ">= 20.26.6, < 21.14.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-20T22:03:18.274Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-8rjx-v5ww-45pp", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "virtualenv", "vendor": "pypa", "versions": [{"status": "affected", "version": ">= 20.26.6, < 21.14.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-113776", "lastModified": "2026-10-20T22:19:30.557", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-20T22:19:30.557", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/pypa/virtualenv/commit/602b26623a724827ff171bf11fef4ad186d01f74"}, {"source": "security-advisories@github.com", "url": "https://github.com/pypa/virtualenv/releases/tag/21.14.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-8rjx-v5ww-45pp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}, {"lang": "en", "value": "CWE-94"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}