Use After Free Affecting hdf5 package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-HDF5-16122098
- published22 Apr 2026
- disclosed9 Apr 2026
- creditdenandz
Introduced: 9 Apr 2026
NewCVE-2026-34734 (opens in a new tab)How to fix?
There is no fixed version for hdf5.
Overview
Affected versions of this package are vulnerable to Use After Free in the H5T__conv_struct function. An attacker can achieve arbitrary code execution or cause a denial of service by supplying a specially crafted h5 file that triggers a use-after-free condition during memory operations.