Weakness (CWE)
CWE-502: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How to prevent it (7 mitigations)
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Architecture and Design, Implementation
If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
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Implementation
When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
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Implementation
Explicitly define a final object() to prevent deserialization.
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Architecture and Design, Implementation
Make fields transient to protect them from deserialization.
An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.
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Implementation
Avoid having unnecessary types or gadgets (a sequence of instances and method invocations that can self-execute during the deserialization process, often found in libraries) available that can be leveraged for malicious ends. This limits the potential for unintended or unauthorized types and gadgets to be leveraged by the attacker. Add only acceptable classes to an allowlist. Note: new gadgets are constantly being discovered, so this alone is not a sufficient mitigation.
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Architecture and Design, Implementation
Employ cryptography of the data or code for protection. However, it's important to note that it would still be client-side security. This is risky because if the client is compromised then the security implemented on the client (the cryptography) can be bypassed.
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Operation
Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
Source: MITRE CWE-502
3,354 results · Feed
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Critical 9.8
RegistrationMagic - Custom Registration Forms <= 3.7.9.2 - PHP Object Injection
The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to PHP Object Injection in all versions up to 3.7.9.3 (exclusive) via deserialization of untrusted input from the is_expired_by_da…
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Critical 9.8
Appointments <= 2.2.1 - Unauthenticated PHP Object Injection
The Appointments plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.2.1 via deserialization of untrusted input from the `wpmudev_appointments` cookie. This allows unauthenticated attackers to inject a PHP Object. At…
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Critical 9.8
Flickr Gallery <= 1.5.2 - Unauthenticated PHP Object Injection
The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.5.2 via deserialization of untrusted input from the `pager ` parameter. This allows unauthenticated attackers to inject a PHP Object. Attackers w…
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Critical 9.8
Remote Code Execution by Pickle Deserialization via FlightServer in pyquokka
pyquokka is a framework for making data lakes work for time series. In versions 0.3.1 and prior, the FlightServer class directly uses pickle.loads() to deserialize action bodies received from Flight clients without any sanitization or validation in the do_act…
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High 8.2
DataEase vulnerable to JDBC URL injection in DB2 and MongoDB data source configuration
DataEase is a data visualization and analytics platform. In DataEase versions through 2.10.13, a JDBC URL injection vulnerability exists in the DB2 and MongoDB data source configuration handlers. In the DB2 data source handler, when the extraParams field is e…
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High 8.2
DataEase vulnerable to remote code execution via H2 JDBC driver bypass
DataEase is a data visualization and analytics platform. In DataEase versions through 2.10.13, a JDBC driver bypass vulnerability exists in the H2 database connection handler. The getJdbc function in H2.java checks if the jdbcUrl starts with jdbc:h2 but retur…
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Critical 9.8
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 syst…
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Critical 9.8
Apache ActiveMQ NMS AMQP Client: Deserialization of Untrusted Data
A Deserialization of Untrusted Data vulnerability exists in the Apache ActiveMQ NMS AMQP Client. This issue affects all versions of Apache ActiveMQ NMS AMQP up to and including 2.3.0, when establishing connections to untrusted AMQP servers. Malicious servers …
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Critical 9.8
Windows Server Update Service (WSUS) Remote Code Execution Vulnerability
Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
KEV Oct 24, 2025 -
High 7.0
Azure Monitor Agent Elevation of Privilege Vulnerability
Deserialization of untrusted data in Azure Monitor Agent allows an authorized attacker to elevate privileges locally.
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High 8.8
Microsoft SharePoint Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
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High 7.8
Insecure deserialization in Ivanti Endpoint Manager before version 2024 SU4 allows a local authenticated attacker to es…
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Medium 6.5CVE-2025-61505 Public exploit
e107 CMS thru 2.3.3 are vulnerable to insecure deserialization in the `install.php` script. The script processes user-c…
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Critical 9.8
Newforma Project Center Server (NPCS) .NET unauthenticated deserialization
Newforma Project Center Server (NPCS) accepts serialized .NET data via the '/ProjectCenter.rem' endpoint on 9003/tcp, allowing a remote, unauthenticated attacker to execute arbitrary code with 'NT AUTHORITY\NetworkService' privileges. According to the recomme…
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Critical 9.8
Newforma Info Exchange (NIX) .NET unauthenticated deserialization
Newforma Info Exchange (NIX) accepts serialized .NET data via the '/remoteweb/remote.rem' endpoint, allowing a remote, unauthenticated attacker to execute arbitrary code with 'NT AUTHORITY\NetworkService' privileges. The vulnerable endpoint is used by Newform…
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Critical —
scio is vunerable to Remote Command Execution through PyTorch
### Impact PyTorch reported a [**critical** vulnerability](https://github.com/pytorch/pytorch/security/advisories/GHSA-53q9-r3pm-6pq6) when using `torch.load`, even with option `weights_only=True`, for `torch <= 2.5.1`. In `scio <= 1.0.0`, the lower bound for…
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Medium 6.5
redragon-erp v1.0 was discovered to contain a Shiro deserialization vulnerability caused by the default Shiro key.
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Medium 6.5
WukongCRM-9.0-JAVA was discovered to contain a fastjson deserialization vulnerability via the /OaExamine/setOaExamine i…
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Medium 6.5
A fastjson deserialization vulnerability in uzy-ssm-mall v1.1.0 allows attackers to execute arbitrary code via supplyin…
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Medium 6.3
ILIAS Base64 Decoding unserialize deserialization
A vulnerability has been found in ILIAS up to 8.23/9.13/10.1. This affects the function unserialize of the component Base64 Decoding Handler. Such manipulation of the argument f_settings leads to deserialization. It is possible to launch the attack remotely. …
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Medium 5.5
ILIAS Test Import unserialize deserialization
A flaw has been found in ILIAS up to 8.23/9.13/10.1. Affected by this issue is the function unserialize of the component Test Import. This manipulation causes deserialization. It is possible to initiate the attack remotely. Upgrading to version 8.24, 9.14 and…
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Critical 10.0
Unauthenticated RCE via .NET Deserialization in Topal Finance Software
Deserialization of Untrusted Data vulnerability in Topal Solutions AG Topal Finanzbuchhaltung on Windows allows Remote Code Execution.This issue affects at least Topal Finanzbuchhaltung: 10.1.5.20 and is fixed in version 11.2.12.00
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Medium 6.4CVE-2025-61765 Public exploit
python-socketio vulnerable to arbitrary Python code execution (RCE) through malicious pickle deserialization in certain multi-server deployments
python-socketio is a Python implementation of the Socket.IO realtime client and server. A remote code execution vulnerability in python-socketio versions prior to 5.14.0 allows attackers to execute arbitrary Python code through malicious pickle deserializatio…
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Critical 9.8
IBM Transformation Extender Advanced code execution
IBM Standards Processing Engine 10.0.1.10 could allow a remote attacker to execute arbitrary code on the system, caused by an unsafe java deserialization. By sending specially crafted input, an attacker could exploit this vulnerability to execute arbitrary co…
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Medium 6.3
LaChatterie Verger provider.ts redirectToAuthorization deserialization
A vulnerability was found in LaChatterie Verger up to 1.2.10. This impacts the function redirectToAuthorization of the file /src/main/services/mcp/oauth/provider.ts. The manipulation of the argument URL results in deserialization. The attack can be executed r…
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Low 2.5
DataChain: Deserialization of Untrusted Data from Environment Variables
DataChain is a Python-based AI-data warehouse for transforming and analyzing unstructured data. Versions 0.34.1 and below allow for deseriaization of untrusted data because of the way the DataChain library reads serialized objects from environment variables (…
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Critical 9.8CVE-2025-61622 EPSS 49%
Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory
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 sour…
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High 7.3
pmTicket Project-Management-Software Cookie class.database.php loadLanguage deserialization
A vulnerability was detected in pmTicket Project-Management-Software up to 2ef379da2075f4761a2c9029cf91d073474e7486. The affected element is the function loadLanguage of the file classes/class.database.php of the component Cookie Handler. Performing manipulat…
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Critical 10.0
In DOXENSE WATCHDOC before 6.1.1.5332, Deserialization of Untrusted Data can lead to remote code execution through the …
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Medium 6.3
GuanxingLu vlarl ZeroMQ reasoning_server.py run_reasoning_server deserialization
A vulnerability was found in GuanxingLu vlarl up to 31abc0baf53ef8f5db666a1c882e1ea64def2997. This vulnerability affects the function experiments.robot.bridge.reasoning_server::run_reasoning_server of the file experiments/robot/bridge/reasoning_server.py of t…
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Medium 6.3
giantspatula SewKinect Endpoint calculate pickle.loads deserialization
A vulnerability has been found in giantspatula SewKinect up to 7fd963ceb3385af3706af02b8a128a13399dffb1. This affects the function pickle.loads of the file /calculate of the component Endpoint. Such manipulation of the argument body_parts/point_cloud leads to…
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Medium 6.3
LazyAGI LazyLLM server.py lazyllm_call deserialization
A security vulnerability has been detected in LazyAGI LazyLLM up to 0.6.1. Affected by this issue is the function lazyllm_call of the file lazyllm/components/deploy/relay/server.py. Such manipulation leads to deserialization. The attack can be launched remote…
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Medium 6.3
geyang ml-logger Ping server.py log_handler deserialization
A vulnerability was determined in geyang ml-logger up to acf255bade5be6ad88d90735c8367b28cbe3a743. Affected is the function log_handler of the file ml_logger/server.py of the component Ping Handler. This manipulation of the argument data causes deserializatio…
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Medium 5.3
Apache IoTDB: Deserialization of untrusted Data
Deserialization of Untrusted Data vulnerability in Apache IoTDB. This issue affects Apache IoTDB: from 1.0.0 before 2.0.5. Users are recommended to upgrade to version 2.0.5, which fixes the issue.
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High 8.8
Datart 1.0.0-rc.3 is vulnerable to Directory Traversal. The configuration file handling of the application allows attac…
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Critical 9.8
SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation Vulnerability
SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of C…
KEV Mar 9, 2026 -
High 7.2
WordPress GSheets Connector Plugin <= 1.1.1 - PHP Object Injection Vulnerability
Deserialization of Untrusted Data vulnerability in raoinfotech GSheets Connector sheetlink allows Object Injection.This issue affects GSheets Connector: from n/a through <= 1.1.1.
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High 7.2
WordPress ConveyThis plugin <= 269.1 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in ConveyThis ConveyThis conveythis-translate allows Object Injection.This issue affects ConveyThis: from n/a through <= 269.1.
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High 7.2
WordPress Awesome Support plugin <= 6.3.5 - Deserialization of untrusted data vulnerability
Deserialization of Untrusted Data vulnerability in awesomesupport Awesome Support awesome-support allows Object Injection.This issue affects Awesome Support: from n/a through <= 6.3.5.
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Medium 6.3
jeecgboot JimuReport DB2 JDBC testConnection deserialization
A vulnerability was determined in jeecgboot JimuReport up to 2.1.2. Affected is an unknown function of the file /drag/onlDragDataSource/testConnection of the component DB2 JDBC Handler. Executing manipulation of the argument clientRerouteServerListJNDIName ca…