Improper Handling of HDF5 ExternalLinks in keras-team/keras
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.5epss 0.8%
from disclosure to weapon31 days
Published on NVDAug 2
1st PoC+31d
exploitation probability
0.8%top 46% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A vulnerability in keras-team/keras versions <= 3.14.0 allows arbitrary local HDF5 file content disclosure due to improper handling of HDF5 ExternalLinks. The `KerasFileEditor` and `keras.saving.load_weights` functions bypass the `safe_get_h5_group` and `safe_get_h5_dataset` helpers, which are designed to reject ExternalLinks and SoftLinks. This results in automatic dereferencing of links to external HDF5 files, enabling attackers to disclose sensitive data from the victim's local filesystem. Specifically, `KerasFileEditor` extracts attributes and datasets from linked files into its internal structures, while `keras.saving.load_weights` loads weights from linked files into the user's model. This issue can be exploited by providing a malicious `.h5`, `.weights.h5`, or `.keras` file containing ExternalLinks.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected products
keras-team · keras-team/keraspublic PoCs found — 1
githubgithub.com/paparojonathan/CVE-2026-9335-keras-hdf5-externallink★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.