{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47952", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-02-01T11:24:18.719Z", "datePublished": "2026-05-16T15:26:06.248Z", "dateUpdated": "2026-05-16T15:26:06.248Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-05-16T15:26:06.248Z"}, "datePublic": "2021-02-24T00:00:00.000Z", "title": "python jsonpickle 2.0.0 Remote Code Execution via py/repr", "descriptions": [{"lang": "en", "value": "python jsonpickle 2.0.0 contains a remote code execution vulnerability that allows attackers to execute arbitrary Python commands by deserializing malicious JSON payloads containing py/repr objects. Attackers can craft JSON strings with py/repr directives that invoke the eval function during deserialization to execute system commands and arbitrary code."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Control of Generation of Code ('Code Injection')", "cweId": "CWE-94", "type": "CWE"}]}], "affected": [{"vendor": "Jsonpickle", "product": "python jsonpickle", "versions": [{"version": "2.0.0", "status": "affected"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 9.3, "baseSeverity": "CRITICAL", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS"}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "references": [{"url": "https://www.exploit-db.com/exploits/49585", "name": "ExploitDB-49585", "tags": ["exploit"]}, {"url": "https://jsonpickle.github.io", "name": "Official Product Homepage", "tags": ["product"]}, {"url": "https://github.com/jsonpickle/jsonpickle", "name": "Product Reference", "tags": ["product"]}, {"name": "VulnCheck Advisory: python jsonpickle 2.0.0 Remote Code Execution via py/repr", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/python-jsonpickle-remote-code-execution-via-py-repr"}], "credits": [{"lang": "en", "value": "Adi Malyanker, Shay Reuven", "type": "finder"}], "x_generator": {"engine": "vulncheck"}}}}

{}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.0.0"}}], "enrichment": {"confidence": 84.0, "confidence_source": "matching", "scores": [{"score": 84.0, "source": "matching"}]}, "original": {"product": "python jsonpickle", "source": "cna", "vendor": "Jsonpickle"}, "product": "jsonpickle", "vendor": "jsonpickle_project"}], "created": "2026-05-16T16:30:27.106236+00:00", "updated": "2026-05-17T17:00:45.381038+00:00", "vendors": ["jsonpickle_project", "jsonpickle_project$PRODUCT$jsonpickle"]}