{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-120499","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-02T15:06:46.389Z","datePublished":"2026-11-05T16:55:32.599Z","dateUpdated":"2026-11-05T18:30:58.290Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-05T16:55:32.599Z"},"datePublic":"2026-11-05T16:19:44.000Z","title":"h5io before 0.2.6 Arbitrary Code Execution via read_hdf5","descriptions":[{"lang":"en","value":"h5io before 0.2.6 contains a code injection vulnerability in read_hdf5() that allows attackers to execute arbitrary code by supplying a crafted HDF5 file. Attackers can store Python code in a node titled timezone, which _triage_read() passes to eval() with builtins reachable, name an arbitrary module in class or custom-object nodes that _import_class() imports, or place pickled objects in pd_dataframe or pd_series nodes that pandas deserializes on read."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","cweId":"CWE-95","type":"CWE"}]},{"descriptions":[{"lang":"en","description":"Deserialization of Untrusted Data","cweId":"CWE-502","type":"CWE"}]}],"affected":[{"vendor":"h5io","product":"h5io","packageURL":"pkg:pypi/h5io","repo":"https://github.com/h5io/h5io","defaultStatus":"unaffected","versions":[{"version":"0.1.0","status":"affected","versionType":"semver","lessThan":"0.2.6"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"}}],"references":[{"url":"https://github.com/h5io/h5io/security/advisories/GHSA-vwvw-f6v4-w737","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-vwvw-f6v4-w737)"},{"url":"https://github.com/h5io/h5io/commit/afff1d61b31790f8c27e6c577bb7703eb1883ddd","tags":["patch"]},{"url":"https://github.com/h5io/h5io/releases/tag/h5io-0.2.6","tags":["release-notes"],"name":"h5io h5io-0.2.6 Release Notes"},{"url":"https://github.com/h5io/h5io/blob/h5io-0.2.5/h5io/_h5io.py#L601-L604","tags":["technical-description"]},{"name":"VulnCheck Advisory: h5io before 0.2.6 Arbitrary Code Execution via read_hdf5","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/h5io-before-0.2.6-arbitrary-code-execution-via-read-hdf5"}],"credits":[{"lang":"en","value":"Dilanka Kaushal Hewage (r3vpwnx)","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"references":[{"url":"https://github.com/h5io/h5io/security/advisories/GHSA-vwvw-f6v4-w737","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-05T18:30:02.460697Z","id":"CVE-2026-120499","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-05T18:30:58.290Z"}}]}}