{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34734","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-30T18:41:20.754Z","datePublished":"2026-04-09T19:01:21.794Z","dateUpdated":"2026-04-13T20:47:37.724Z"},"containers":{"cna":{"title":"HDF5: H5T__conv_struct Use After Free","problemTypes":[{"descriptions":[{"cweId":"CWE-416","lang":"en","description":"CWE-416: Use After Free","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/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj"}],"affected":[{"vendor":"HDFGroup","product":"hdf5","versions":[{"version":"<= 1.14.1-2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-04-09T19:01:21.794Z"},"descriptions":[{"lang":"en","value":"HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term."}],"source":{"advisory":"GHSA-w7v2-9cmr-pwwj","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-13T20:47:34.523913Z","id":"CVE-2026-34734","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":"2026-04-13T20:47:37.724Z"}}]}}