MEDIUM 6.8 NVD
CVE-2026-19026
H5Z__filter_nbit in H5Znbit.c in HDF5 through 2.3.0 dereferences cd_values[0] through cd_values[4] without validating that cd_values is non-NULL or that cd_nelm
H5Z__filter_nbit in H5Znbit.c in HDF5 through 2.3.0 dereferences cd_values[0] through cd_values[4] without validating that cd_values is non-NULL or that cd_nelmts is at least 5, the fixed size of the filter's header. This allows attackers to cause a denial of service via a crafted HDF5 file that stores the N-Bit filter pipeline message with zero client-data values, opened and read via H5Dread, e.g. by the h5ls or h5repack tools.
References
- https://github.com/HDFGroup/hdf5/issues/6489
- https://github.com/HDFGroup/hdf5/issues/6492
- https://github.com/HDFGroup/hdf5/pull/6497
This medium severity vulnerability with a CVSS score of 6.8 was published on 2026-08-05 via NVD.
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