CVE-2026-12481

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d	Exploit Third Party Advisory
https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:keras:keras:3.14.0:*:*:*:*:*:*:*

History

08 Jul 2026, 15:01

Type	Values Removed	Values Added
First Time		Keras Keras keras
CVSS	v2 : ~~unknown~~ v3 : ~~8.8~~	v2 : unknown v3 : 9.8
CPE		cpe:2.3:a:keras:keras:3.14.0:::::::*
References	~~() https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d -~~	() https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d - Exploit, Third Party Advisory

06 Jul 2026, 16:16

Type	Values Removed	Values Added
References	~~() https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d -~~	() https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d -

03 Jul 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-03 21:16

Updated : 2026-07-08 15:01

NVD link : CVE-2026-12481

Mitre link : CVE-2026-12481

CVE.ORG link : CVE-2026-12481

JSON object : View

Products Affected

keras

keras

CWE

CWE-502

Deserialization of Untrusted Data

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