PYSEC-2026-453 pgAdmin 4 vulnerable to Unsafe Deserialization and Remote Code Execution by an Authenticated user

pgAdmin prior to version 8.4 is affected by a path-traversal vulnerability while deserializing users’ sessions in the session handling code. If the server is running on Windows, an unauthenticated attacker can load and deserialize remote pickle objects and gain code execution. If the server is...

PYSEC-2026-543 Hugging Face smolagents: Unsafe deserialization in Remote Python Executor leads to RCE

Hugging Face smolagents Remote Python Executor Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hugging Face smolagents. Authentication is not required to exploit this...

PYSEC-2026-491 Apache Pyfory python is vulnerable to deserialization of untrusted data

Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stre...

PYSEC-2026-349 H2O affected by a deserialization vulnerability

A deserialization vulnerability exists in h2oai/h2o-3 versions = 3.46.0.7, allowing attackers to read arbitrary system files and execute arbitrary code. The vulnerability arises from improper handling of JDBC connection parameters, which can be exploited by bypassing regular expression checks and...

PYSEC-2026-327 DeepDiff Class Pollution in Delta class leading to DoS, Remote Code Execution, and more

Summary Python class pollution is a novel vulnerability categorized under CWE-915. The Delta class is vulnerable to class pollution via its constructor, and when combined with a gadget available in DeltaDiff itself, it can lead to Denial of Service and Remote Code Execution via insecure Pickle...

PYSEC-2026-368 Keras framework vulnerable to deserialization of untrusted data

Deserialization of untrusted data can occur in versions of the Keras framework running versions 3.11.0 up to but not including 3.11.3, enabling a maliciously uploaded Keras file containing a TorchModuleWrapper class to run arbitrary code on an end user’s system when loaded despite safe mode being...

PYSEC-2026-503 pyquokka is Vulnerable to Remote Code Execution by Pickle Deserialization via FlightServer

Description In the FlightServer class of the pyquokka framework, the doaction method directly uses pickle.loads to deserialize action bodies received from Flight clients without any sanitization or validation, which results in a remote code execution vulnerability. The vulnerable code is located...

PYSEC-2026-490 Apache Pyfory python is vulnerable to deserialization of untrusted data

Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stre...

PYSEC-2026-427 Modular Max Serve has Unsafe Deserialization vulnerability

Unsafe Deserialization vulnerability in Modular Max Serve before 25.6, specifically when the "--experimental-enable-kvcache-agent" feature is used allowing attackers to execute arbitrary code...

PYSEC-2026-566 vLLM Deserialization of Untrusted Data vulnerability

vllm-project vllm version v0.6.2 contains a vulnerability in the MessageQueue.dequeue API function. The function uses pickle.loads to parse received sockets directly, leading to a remote code execution vulnerability. An attacker can exploit this by sending a malicious payload to the MessageQueue,...

PYSEC-2026-351 H2O Deserialization of Untrusted Data Vulnerability

A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitrary code via deserialization of untrusted data. The vulnerability exists in the endpoints POST /99/ImportSQLTable and POST /3/SaveToHiveTable, where user-controlled JDBC URLs are...

PYSEC-2026-294 BentoML Allows Remote Code Execution (RCE) via Insecure Deserialization

Summary A Remote Code Execution RCE vulnerability caused by insecure deserialization has been identified in the latest versionv1.4.2 of BentoML. It allows any unauthenticated user to execute arbitrary code on the server. Details It exists an unsafe code segment in serde.py: Python def...

PYSEC-2026-567 vLLM Allows Remote Code Execution via PyNcclPipe Communication Service

Impacted Environments This issue ONLY impacts environments using the PyNcclPipe KV cache transfer integration with the V0 engine. No other configurations are affected. Summary vLLM supports the use of the PyNcclPipe class to establish a peer-to-peer communication domain for data transmission...

PYSEC-2026-253 AgentScope Deserialization Vulnerability

A vulnerability in the RpcAgentServerLauncher class of modelscope/agentscope v0.0.6a3 allows for remote code execution RCE via deserialization of untrusted data using the dill library. The issue occurs in the AgentServerServicer.createagent method, where serialized input is deserialized using...

vLLM Allows Remote Code Execution via PyNcclPipe Communication Service

Impacted EnvironmentsThis issue ONLY impacts environments using the PyNcclPipe KV cache transfer integration with the V0 engine. No other configurations are affected. SummaryvLLM supports the use of thePyNcclPipeclass to establish a peer-to-peer communication domain for data transmission between...

PYSEC-2026-295 BentoML deserialization vulnerability

A deserialization vulnerability exists in BentoML's runner server in bentoml/bentoml versions =1.3.4.post1. By setting specific parameters, an attacker can execute unauthorized arbitrary code on the server, causing severe harm. The vulnerability is triggered when the args-number parameter is...

PYSEC-2026-568 vLLM deserialization vulnerability in vllm.distributed.GroupCoordinator.recv_object

vllm-project vllm version 0.6.0 contains a vulnerability in the distributed training API. The function vllm.distributed.GroupCoordinator.recvobject deserializes received object bytes using pickle.loads without sanitization, leading to a remote code execution vulnerability. Maintainer perspective...

PYSEC-2026-510 Qiskit allows arbitrary code execution decoding QPY format versions < 13

Impact A maliciously crafted QPY file can potentially execute arbitrary-code embedded in the payload without privilege escalation when deserializing QPY formats 13. A python process calling Qiskit's qiskit.qpy.load function could potentially execute any arbitrary Python code embedded in the corre...

PYSEC-2026-511 Qiskit allows arbitrary code execution decoding QPY format versions < 13

Impact A maliciously crafted QPY file can potentially execute arbitrary-code embedded in the payload without privilege escalation when deserializing QPY formats 13. A python process calling Qiskit's qiskit.qpy.load function could potentially execute any arbitrary Python code embedded in the corre...

PYSEC-2026-367 Kedro deserialization vulnerability

A Remote Code Execution RCE vulnerability has been identified in the Kedro ShelveStore class version 0.19.8. This vulnerability allows an attacker to execute arbitrary Python code via deserialization of malicious payloads, potentially leading to a full system compromise. The ShelveStore class use...