{"id":"CVE-2026-120499","published":"2026-11-05T17:18:00.097","lastModified":"2026-11-05T19:17:14.713","description":"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.","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-95","CWE-502"],"vendors":[],"products":[],"references":[{"url":"https://github.com/h5io/h5io/blob/h5io-0.2.5/h5io/_h5io.py#L601-L604","tags":[]},{"url":"https://github.com/h5io/h5io/commit/afff1d61b31790f8c27e6c577bb7703eb1883ddd","tags":[]},{"url":"https://github.com/h5io/h5io/releases/tag/h5io-0.2.6","tags":[]},{"url":"https://github.com/h5io/h5io/security/advisories/GHSA-vwvw-f6v4-w737","tags":[]},{"url":"https://www.vulncheck.com/advisories/h5io-before-0.2.6-arbitrary-code-execution-via-read-hdf5","tags":[]},{"url":"https://github.com/h5io/h5io/security/advisories/GHSA-vwvw-f6v4-w737","tags":[]}],"exploitRefs":[{"url":"https://github.com/h5io/h5io/blob/h5io-0.2.5/h5io/_h5io.py#L601-L604","tags":[]},{"url":"https://github.com/h5io/h5io/commit/afff1d61b31790f8c27e6c577bb7703eb1883ddd","tags":[]},{"url":"https://github.com/h5io/h5io/releases/tag/h5io-0.2.6","tags":[]},{"url":"https://github.com/h5io/h5io/security/advisories/GHSA-vwvw-f6v4-w737","tags":[]},{"url":"https://github.com/h5io/h5io/security/advisories/GHSA-vwvw-f6v4-w737","tags":[]}],"hasPoc":true,"ai":null}