Bug 2496942 (CVE-2026-12481) - CVE-2026-12481 keras: Keras: Arbitrary code execution via deserialization vulnerability
Summary: CVE-2026-12481 keras: Keras: Arbitrary code execution via deserialization vul...
Keywords:
Status: NEW
Alias: CVE-2026-12481
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-03 21:02 UTC by OSIDB Bzimport
Modified: 2026-07-06 09:57 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-03 21:02:04 UTC
A vulnerability in keras-team/keras version 3.14.0 allows for arbitrary code execution due to improper handling of deserialization in the `Lambda` layer. Specifically, the `_raise_for_lambda_deserialization()` function fails to enforce the safe-mode guard when `safe_mode` is set to `None`, which is the default value when `from_config()` is called outside of a `SafeModeScope` context. This logic error conflates `None` (unset/default-deny) with `False` (explicitly disabled), bypassing the guard and allowing attacker-controlled `marshal` bytecode to be deserialized. Affected call sites include `keras.layers.deserialize(config)`, `keras.models.clone_model(model)`, and any direct invocation of `Lambda.from_config(config)` without an enclosing `SafeModeScope(True)`. This vulnerability can be exploited to achieve arbitrary OS-level code execution in the context of the server or user process.


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