{"api_version":"1","generated_at":"2026-10-21T00:46:27+00:00","cve":"CVE-2026-113732","urls":{"html":"https://cve.report/CVE-2026-113732","api":"https://cve.report/api/cve/CVE-2026-113732.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-113732","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-113732"},"summary":{"title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-10-20 22:19:30","updated_at":"2026-10-20 22:19:30"},"problem_types":["CWE-78","CWE-116","CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","CWE-116 CWE-116: Improper Encoding or Escaping of Output"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","data":{"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":[{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-c947-3pg5-gm8q","name":"https://github.com/pypa/virtualenv/security/advisories/GHSA-c947-3pg5-gm8q","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.2","name":"https://github.com/pypa/virtualenv/releases/tag/21.14.2","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab","name":"https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-113732","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113732","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"pypa","product":"virtualenv","version":"affected < 21.14.2","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"virtualenv","vendor":"pypa","versions":[{"status":"affected","version":"< 21.14.2"}]}],"descriptions":[{"lang":"en","value":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2."}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-116","description":"CWE-116: Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-20T22:01:23.931Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/pypa/virtualenv/security/advisories/GHSA-c947-3pg5-gm8q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-c947-3pg5-gm8q"},{"name":"https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab","tags":["x_refsource_MISC"],"url":"https://github.com/pypa/virtualenv/commit/3bddeaf8d02c3ee7f576503efb082f8f494cfcab"},{"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"}],"source":{"advisory":"GHSA-c947-3pg5-gm8q","discovery":"UNKNOWN"},"title":"virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-113732","datePublished":"2026-10-20T22:01:23.931Z","dateReserved":"2026-10-20T16:03:14.864Z","dateUpdated":"2026-10-20T22:01:23.931Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-20 22:19:30","lastModifiedDate":"2026-10-20 22:19:30","problem_types":["CWE-78","CWE-116","CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","CWE-116 CWE-116: Improper Encoding or Escaping of Output"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"113732","Ordinal":"1","Title":"virtualenv activate.fish runs commands from a path or prompt wit","CVE":"CVE-2026-113732","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"113732","Ordinal":"1","NoteData":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote(), which uses POSIX shlex.quote() even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or VIRTUALENV_PROMPT value containing a backslash before a quote can therefore terminate the generated fish literal and execute command substitution when the user sources activate.fish. This issue is fixed in version 21.14.2.","Type":"Description","Title":"virtualenv activate.fish runs commands from a path or prompt wit"}]}}}