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)
-
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.
-
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.
-
Implementation
Explicitly define a final object() to prevent deserialization.
-
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.
-
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.
-
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.
-
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
330 results · Clear filters · Feed
-
Critical 9.8
Deserialization of Untrusted Data in Apache ShardingSphere
In Apache ShardingSphere(incubator) 4.0.0-RC3 and 4.0.0, the ShardingSphere's web console uses the SnakeYAML library for parsing YAML inputs to load datasource configuration. SnakeYAML allows to unmarshal data to a Java type By using the YAML tag. Unmarshalli…
-
Critical 9.8
Zoho ManageEngine Desktop Central before 10.0.474 allows remote code execution because of deserialization of untrusted …
KEV Nov 3, 2021 -
Critical 9.8
jackson-databind mishandles the interaction between serialization gadgets and typing
FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to com.ibatis.sqlmap.engine.transaction.jta.JtaTransactionConfig (aka ibatis-sqlmap).
-
Critical 9.8
jackson-databind mishandles the interaction between serialization gadgets and typing
FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to br.com.anteros.dbcp.AnterosDBCPConfig (aka anteros-core).
-
Critical 9.8
A remote code execution vulnerability exists in Microsoft SQL Server Reporting Services when it incorrectly handles pag…
KEV Sep 18, 2024 -
Critical 9.8
Deserialization of Untrusted Data in jackson-databind
FasterXML jackson-databind 2.0.0 through 2.9.10.2 lacks certain xbean-reflect/JNDI blocking, as demonstrated by org.apache.xbean.propertyeditor.JndiConverter.
-
Critical 9.8
Insecure Deserialization in Apache XML-RPC
An untrusted deserialization was found in the org.apache.xmlrpc.parser.XmlRpcResponseParser:addResult method of Apache XML-RPC (aka ws-xmlrpc) library. A malicious XML-RPC server could target a XML-RPC client causing it to execute arbitrary code. Apache XML-R…
-
Critical 9.8
Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Caching,CacheStore,Invocation). S…
KEV Nov 3, 2021 -
Critical 9.8
Pivotal Spring Framework contains unsafe Java deserialization methods
Pivotal Spring Framework through 5.3.16 suffers from a potential remote code execution (RCE) issue if used for Java deserialization of untrusted data. Depending on how the library is implemented within a product, this issue may or not occur, and authenticatio…
-
Critical 9.8
Deserialization of Untrusted Data in Log4j
Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log dat…
-
Critical 9.8
Progress Telerik UI for ASP.NET AJAX through 2019.3.1023 contains a .NET deserialization vulnerability in the RadAsyncU…
KEV Nov 3, 2021 -
Critical 9.8
Liferay Portal Allows RCE via Deserialization of a JSON Payload
Liferay Portal CE 6.2.5 allows remote command execution because of deserialization of a JSON payload.
-
Critical 9.8
Polymorphic Typing issue in FasterXML jackson-databind
A Polymorphic Typing issue was discovered in FasterXML jackson-databind before 2.9.10. It is related to com.zaxxer.hikari.HikariConfig.
-
High 7.5
Deserialization of untrusted data in FasterXML jackson-databind
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9.2. This occurs when Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the logback jar in …
-
Medium 5.9
Deserialization of Untrusted Data in FasterXML jackson-databind
FasterXML jackson-databind 2.x before 2.9.9.1 might allow attackers to have a variety of impacts by leveraging failure to block the logback-core class from polymorphic deserialization. Depending on the classpath content, remote code execution may be possible.
-
Medium 5.9
Deserialization of untrusted data in FasterXML jackson-databind
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x through 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has JDOM 1.x or 2.x jar in the class…
-
Medium 6.5
Shopware Insecure Deserialization Vulnerability
In createInstanceFromNamedArguments in Shopware through 5.6.x, a crafted web request can trigger a PHP object instantiation vulnerability, which can result in an arbitrary deserialization if the right class is instantiated. An attacker can leverage this deser…
-
High 7.5
Information exposure in FasterXML jackson-databind
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14…
-
Unscored —
An attacker could send a specifically crafted payload to the XML-RPC invocation script and trigger the unserialize() ca…
-
High 8.8
Pimcore Unserialize Remote Code Execution
An issue was discovered in Pimcore before 5.7.1. An attacker with classes permission can send a POST request to /admin/class/bulk-commit, which will make it possible to exploit the unserialize function when passing untrusted values in the data parameter to bu…
-
Critical 9.8
An issue was discovered in Kentico 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and 9.x version…
KEV Mar 25, 2022 -
Critical 9.8
Critical severity vulnerability that affects org.apache.solr:solr-core
In Apache Solr versions 5.0.0 to 5.5.5 and 6.0.0 to 6.6.5, the Config API allows to configure the JMX server via an HTTP POST request. By pointing it to a malicious RMI server, an attacker could take advantage of Solr's unsafe deserialization to trigger remot…
-
High 8.1
Drupal core - Highly critical - Remote Code Execution
Some field types do not properly sanitize data from non-form sources in Drupal 8.5.x before 8.5.11 and Drupal 8.6.x before 8.6.10. This can lead to arbitrary PHP code execution in some cases. A site is only affected by this if one of the following conditions …
KEV Mar 25, 2022 -
Critical 9.8
Numpy Deserialization of Untrusted Data
An issue was discovered in NumPy before 1.16.3. It uses the pickle Python module unsafely, which allows remote attackers to execute arbitrary code via a crafted serialized object, as demonstrated by a numpy.load call. NOTE: third parties dispute this issue be…
-
Critical 9.8
Deserialization of Untrusted Data in Jenkins
A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by acce…
KEV Feb 10, 2022 -
Critical 9.8
Deserialization of Untrusted Data in superset
Versions of Superset prior to 0.23 used an unsafe load method from the pickle library to deserialize data leading to possible remote code execution. Note Superset 0.23 was released prior to any Superset release under the Apache Software Foundation.
-
High 7.0CVE-2018-15686 Public exploit
systemd: reexec state injection: fgets() on overlong lines leads to line splitting
A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution via NotifyAccess. This can be used to improperly influence systemd execution and possibly lead to root privilege escalation. Affected relea…
-
Critical 9.8
TCPDF vulnerable to attackers triggering deserialization of arbitrary data
An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.
-
High 8.1
Laravel Framework RCE Vulnerability
In Laravel Framework through 5.5.40 and 5.6.x through 5.6.29, remote code execution might occur as a result of an unserialize call on a potentially untrusted X-XSRF-TOKEN value. This involves the decrypt method in Illuminate/Encryption/Encrypter.php and Pendi…
KEV Jan 16, 2024 -
High 7.5
A remote code execution vulnerability exists in "Microsoft COM for Windows" when it fails to properly handle serialized…
KEV Aug 5, 2024 -
Critical 9.8
Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: WLS Core Components). …
KEV Sep 8, 2022 -
Critical 9.8
FasterXML jackson-databind allows unauthenticated remote code execution
FasterXML jackson-databind before 2.7.9.3, 2.8.x before 2.8.11.1 and 2.9.x before 2.9.5 allows unauthenticated remote code execution because of an incomplete fix for the CVE-2017-7525 deserialization flaw. This is exploitable by sending maliciously crafted JS…
-
Critical 9.8
jackson-databind is vulnerable to a deserialization flaw
A deserialization flaw was discovered in the jackson-databind, versions before 2.6.7.1, 2.7.9.1 and 2.8.9, which could allow an unauthenticated user to perform code execution by sending the maliciously crafted input to the readValue method of the ObjectMapper.
-
Critical 9.8
Deserialization of Untrusted Data in Jenkins
Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution. An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java `SignedObject` object to the…
KEV Oct 2, 2025 -
Critical 9.8
jackson-databind vulnerable to remote code execution due to incorrect deserialization and blocklist bypass
FasterXML jackson-databind through 2.8.10 and 2.9.x through 2.9.3 allows unauthenticated remote code execution because of an incomplete fix for the CVE-2017-7525 deserialization flaw. This is exploitable by sending maliciously crafted JSON input to the readVa…
-
Critical 9.8
Remote Code Execution in Apache Synapse
In Apache Synapse, by default no authentication is required for Java Remote Method Invocation (RMI). So Apache Synapse 3.0.1 or all previous releases (3.0.0, 2.1.0, 2.0.0, 1.2, 1.1.2, 1.1.1) allows remote code execution attacks that can be performed by inject…
-
Critical 9.8
Deserialization of Untrusted Data in Apache commons collections
Red Hat JBoss A-MQ 6.x; BPM Suite (BPMS) 6.x; BRMS 6.x and 5.x; Data Grid (JDG) 6.x; Data Virtualization (JDV) 6.x and 5.x; Enterprise Application Platform 6.x, 5.x, and 4.3.x; Fuse 6.x; Fuse Service Works (FSW) 6.x; Operations Network (JBoss ON) 3.x; Portal …
-
Critical 9.8
In Jboss Application Server as shipped with Red Hat Enterprise Application Platform 5.2, it was found that the doFilter…
KEV Dec 10, 2021 -
High 8.1
REST Plugin in Apache Struts uses an XStreamHandler with an instance of XStream for deserialization without any type filtering
The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloa…
KEV Nov 3, 2021 -
Unscored —
Deserialization vulnerability in synophoto_csPhotoMisc.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 all…