Vulnerability · Published Aug 10, 2026 · Assigned by @huntr_ai
CVE-2026-12570Denial of Service via HDF5 Shape Bomb in keras.models.load_model() in keras-team/keras
Medium 5.5
In plain English
A medium-severity resource allocation without limits in keras-team/keras from keras-team. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | keras | 3.15.0 | GHSA-74m6-m3xx-3vmj |
| PyPI | keras | 3.15.0 | PYSEC-2026-3856 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| keras-team | keras-team/keras | unspecified – before 3.12.3, 3.15.0 |
Weakness: CWE-770 · Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H