CVE-2026-50558

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{"affected": [{"affectedData": [{"product": "penelope", "vendor": "brightio", "versions": [{"status": "affected", "version": "< 0.20.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Penelope Shell Handler is a post-exploitation shell handler for authorized security testing. Prior to 0.20.0, the Unix download() implementation in penelope.py used tar.extractall(local_download_folder) on tar archives returned by remote sessions without validating member paths, allowing a malicious or compromised session to write files outside the intended download directory and potentially overwrite ~/.penelope/peneloperc. This issue is fixed in version 0.20.0."}, {"lang": "es", "value": "Penelope Shell Gestor es un gestor de shell de post-explotaci\u00f3n para pruebas de seguridad autorizadas. Antes de la versi\u00f3n 0.20.0, la implementaci\u00f3n de download() de Unix en penelope.py utilizaba tar.extractall(local_download_folder) en archivos tar devueltos por sesiones remotas sin validar las rutas de los miembros, permitiendo que una sesi\u00f3n maliciosa o comprometida escribiera archivos fuera del directorio de descarga previsto y potencialmente sobrescribiera ~/.penelope/peneloperc. Este problema se ha corregido en la versi\u00f3n 0.20.0."}], "id": "CVE-2026-50558", "lastModified": "2026-10-23T23:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50558", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-29T17:59:13.087639Z", "version": "2.0.3"}}]}, "published": "2026-07-29T16:17:52.900", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/brightio/penelope/commit/a040afb5db32c7e80b5e8a2f9b2164cf911cfa62"}, {"source": "security-advisories@github.com", "url": "https://github.com/brightio/penelope/releases/tag/v0.20.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/brightio/penelope/security/advisories/GHSA-f42x-p2mx-hm8r"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/brightio/penelope/security/advisories/GHSA-f42x-p2mx-hm8r"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.20.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "penelope", "source": "cna", "vendor": "brightio"}, "product": "penelope", "vendor": "brightio"}], "created": "2026-07-30T14:02:03.227208+00:00", "updated": "2026-08-03T13:15:05.194897+00:00", "vendors": ["brightio", "brightio$PRODUCT$penelope"]}