PYSEC-2026-3856

See a problem?
Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/keras/PYSEC-2026-3856.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-3856
Aliases
Published
2026-09-10T09:44:51Z
Modified
2026-09-10T12:15:06Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Keras model loading is vulnerable to denial of service through HDF5 shape bombs
Details

A vulnerability in keras-team/keras versions < 3.15.0 allows for a denial of service (DoS) attack when loading malicious .keras model files via the keras.models.load_model() function. The H5IOStore.getitem method in keras/src/saving/saving_lib.py does not validate the shape or size of datasets, leading to unbounded memory allocation. A specially crafted .keras file can exploit this flaw to trigger an out-of-memory (OOM) condition, causing the process to be terminated (exit code 137). This issue bypasses the fix for CVE-2026-0897, which only addressed a similar vulnerability in KerasFileEditor. The attack vector includes poisoned models from public repositories or malicious model registries, posing a risk to machine learning pipelines that process untrusted models.

References

Affected packages

PyPI / keras

Package

Name
keras
View open source insights on deps.dev
Purl
pkg:pypi/keras

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.15.0

Affected versions

0.*
0.2.0
0.3.0
0.3.1
0.3.2
0.3.3
1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.1.0
1.1.1
1.1.2
1.2.0
1.2.1
1.2.2
2.*
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.1.0
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.2.0
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.3.0
2.3.1
2.4.0
2.4.1
2.4.2
2.4.3
2.5.0rc0
2.6.0rc0
2.6.0rc1
2.6.0rc2
2.6.0rc3
2.6.0
2.7.0rc0
2.7.0rc2
2.7.0
2.8.0rc0
2.8.0rc1
2.8.0
2.9.0rc0
2.9.0rc1
2.9.0rc2
2.9.0
2.10.0rc0
2.10.0rc1
2.10.0
2.11.0rc0
2.11.0rc1
2.11.0rc2
2.11.0rc3
2.11.0
2.12.0rc0
2.12.0rc1
2.12.0
2.13.1rc0
2.13.1rc1
2.13.1
2.14.0rc0
2.14.0
2.15.0rc0
2.15.0rc1
2.15.0
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.1.0
3.1.1
3.2.0
3.2.1
3.3.0
3.3.1
3.3.2
3.3.3
3.4.0
3.4.1
3.5.0
3.6.0
3.7.0
3.8.0
3.9.0
3.9.1
3.9.2
3.10.0
3.11.0
3.11.1
3.11.2
3.11.3
3.12.0
3.12.1
3.12.2
3.12.3
3.12.4
3.13.0
3.13.1
3.13.2
3.14.0
3.14.1

Database specific

source 
"https://github.com/pypa/advisory-database/blob/main/vulns/keras/PYSEC-2026-3856.yaml"