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Medium

Keras: HDF5 links can disclose local file contents

  • Disclosed: 02.08.2026
  • Updated: 11.10.2026 14:19

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.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) keras < 3.12.3, >= 3.13.0, < 3.15.0 3.12.3, 3.15.0

References

CVSS score 6.5/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-22
Platform
Python (PyPI)
Package
keras
Disclosed
02.08.2026
Updated
11.10.2026 14:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-3633 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-m8wh-29wm-52mv - CC BY 4.0

Vulnerability history: keras

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (20) in the archive
Total entries
20
First → latest
04.2024 08.2026
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Critical 2
  • High 11
  • Medium 6
  • Low 1

Disclosures per year

Severity:
  1. Keras: HDF5 links can disclose local file contents this entry
    Medium · 6.5 CVE-2026-9335 < 3.12.3, >= 3.13.0, < 3.15.0 3.12.3, 3.15.0
  2. Keras: TorchModuleWrapper can deserialize unsafe PyTorch pickle data
    High · 7.8 CVE-2026-12484 < 3.12.3, >= 3.13.0, < 3.15.0 3.12.3, 3.15.0
  3. Keras: Lambda deserialization can bypass safe mode and execute code
    High · 8.8 CVE-2026-12481 < 3.12.3, >= 3.13.0, < 3.15.0 3.12.3, 3.15.0
  4. Keras versions prior to 3.14.0 are vulnerable to a path traversal issue in the archive extraction utilities located in `keras/src/utils/file_utils.py`. The functions `filter_safe_tarinfos()` and `filt
    High · 8.1 CVE-2026-11816 < 3.14.0 3.14.0
  5. Keras has an untrusted deserialization vulnerability
    High · 8.8 CVE-2026-1462 < 3.13.2 3.13.2
  6. Keras has a Local File Disclosure via HDF5 External Storage During Keras Weight Loading
    High · 7.1 CVE-2026-1669 >= 3.13.0, < 3.13.2, >= 3.0.0, < 3.12.1 3.13.2, 3.12.1
  7. Allocation of Resources Without Limits or Throttling in the HDF5 weight loading component in Google Keras 3.0.0 through 3.13.0 on all platforms allows a remote attacker to cause a Denial of Service (D
    High · 7.5 CVE-2026-0897 >= 3.0.0, < 3.13.1 3.13.1
  8. Keras Directory Traversal Vulnerability
    High · 9.8 CVE-2025-12060 < 3.12.0 3.12.0
  9. Keras framework vulnerable to deserialization of untrusted data
    Critical · 9.8 CVE-2025-49655 >= 3.11.0, < 3.11.3 3.11.3
  10. Keras is vulnerable to Deserialization of Untrusted Data
    High · 7.3 CVE-2025-9906 < 3.11.0 3.11.0
  11. The Keras `Model.load_model` method **silently** ignores `safe_mode=True` and allows arbitrary code execution when a `.h5`/`.hdf5` file is loaded.
    High CVE-2025-9905 >= 3.0.0, < 3.11.3 3.11.3
  12. Keras vulnerable to CVE-2025-1550 bypass via reuse of internal functionality
    High · 8.8 CVE-2025-8747 >= 3.0.0, < 3.11.0 3.11.0
  13. Arbitrary Code Execution via Crafted Keras Config for Model Loading
    High CVE-2025-1550 >= 3.0.0, < 3.9.0 3.9.0
  14. Keras code injection vulnerability
    Critical · 9.8 CVE-2024-3660 < 2.13.1rc0 2.13.1rc0

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