{"id":"JLSEC-2026-1163","details":"HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for the size parameter, it will underflow when trying to place a null terminator in the buffer. This can occur if `H5Iget_name` is invoked in a way where `size` can be forced to zero, and there is important data before the `name` buffer.","modified":"2026-08-04T13:30:03.719277500Z","published":"2026-08-04T13:25:24.347Z","upstream":["CVE-2026-26199","EUVD-2026-45970"],"database_specific":{"sources":[{"modified":"2026-07-29T15:38:17.587Z","published":"2026-07-20T16:16:57.550Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-26199","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26199","database_specific":{"status":"Analyzed"},"id":"CVE-2026-26199","imported":"2026-08-04T06:02:36.498Z"},{"modified":"2026-07-20T18:56:52Z","published":"2026-07-20T14:59:35Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-45970","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-45970","id":"EUVD-2026-45970","imported":"2026-08-04T06:02:37.705Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://github.com/HDFGroup/hdf5/blob/develop/src/H5Gname.c#L474"},{"type":"WEB","url":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-5c6x-jmgf-f5vc"}],"affected":[{"package":{"name":"HDF5_jll","ecosystem":"Julia","purl":"pkg:julia/HDF5_jll?uuid=0234f1f7-429e-5d53-9886-15a909be8d59"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.1.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1163.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","source":"NVD"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","source":"CNA"}]}