Common Weakness Enumeration

CWE-502

Allowed

Deserialization of Untrusted Data

Abstraction: Base · Status: Draft

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

5803 vulnerabilities reference this CWE, most recent first.

CVE-2026-78286 (GCVE-0-2026-78286)

Vulnerability from cvelistv5 – Published: 2026-08-27 09:00 – Updated: 2026-08-28 18:35
VLAI
Title
WordPress Geo Controller plugin <= 8.9.8 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Geo Controller <= 8.9.8 versions.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 18:19 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard B 75/100 over 2979 records in the last 180 days details
References
Impacted products
Vendor Product Version
INFINITUM FORM Geo Controller Affected: n/a , ≤ 8.9.8 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-78276 (GCVE-0-2026-78276)

Vulnerability from cvelistv5 – Published: 2026-08-27 08:59 – Updated: 2026-08-27 14:31
VLAI
Title
WordPress Fluent Boards Pro plugin <= 2.0.11 - PHP Object Injection vulnerability
Summary
Editor PHP Object Injection in Fluent Boards Pro <= 2.0.11 versions.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 14:28 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard B 75/100 over 2979 records in the last 180 days details
References
Impacted products
Vendor Product Version
WP Manage Ninja Fluent Boards Pro Affected: n/a , ≤ 2.0.11 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-78265 (GCVE-0-2026-78265)

Vulnerability from cvelistv5 – Published: 2026-08-24 21:31 – Updated: 2026-08-25 14:40
VLAI
Title
WordPress The Events Calendar plugin <= 6.17.2 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in The Events Calendar <= 6.17.2 versions.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:40 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard B 75/100 over 2979 records in the last 180 days details
References
Impacted products
Vendor Product Version
Nexcess The Events Calendar Affected: n/a , ≤ 6.17.2 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-78262 (GCVE-0-2026-78262)

Vulnerability from cvelistv5 – Published: 2026-08-24 21:31 – Updated: 2026-08-27 14:25
VLAI
Title
WordPress WP Project Manager plugin <= 4.0.6 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in WP Project Manager <= 4.0.6 versions.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 14:24 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard B 75/100 over 2979 records in the last 180 days details
References
Impacted products
Vendor Product Version
weDevs WP Project Manager Affected: n/a , ≤ 4.0.6 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-78257 (GCVE-0-2026-78257)

Vulnerability from cvelistv5 – Published: 2026-08-27 08:59 – Updated: 2026-08-27 12:36
VLAI
Title
WordPress Booking and Rental Manager plugin <= 2.7.5 - PHP Object Injection vulnerability
Summary
Contributor PHP Object Injection in Booking and Rental Manager <= 2.7.5 versions.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 12:36 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard B 75/100 over 2979 records in the last 180 days details
References
Impacted products
Vendor Product Version
magepeopleteam Booking and Rental Manager Affected: n/a , ≤ 2.7.5 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-78175 (GCVE-0-2026-78175)

Vulnerability from cvelistv5 – Published: 2026-09-12 07:39 – Updated: 2026-09-15 14:01
VLAI
Title
Tutor LMS <= 4.0.7 - Authenticated (Subscriber+) PHP Object Injection to Remote Code Execution
Summary
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.0.7 via the `withdraw_method_field` parameter of the `tutor_save_withdraw_account` AJAX handler. This is due to the handler lacking any capability or role check, relying solely on a nonce, while also passing attacker-supplied values through `esc_sql()`, which replaces every `%` character with a 66-byte HMAC placeholder token before the data is serialized and stored via `update_user_meta()`; when the meta is later retrieved, the placeholder is collapsed back to a single `%`, leaving serialized string length declarations 65 bytes greater than the actual content, and because array keys originate from entirely unescaped POST field names, `unserialize()` over-reads into attacker-controlled bytes, allowing injection of an arbitrary serialized object stream. This makes it possible for authenticated attackers, with subscriber-level access and above, to achieve remote code execution on the server by triggering the `GuzzleHttp\Cookie\FileCookieJar` POP chain, reachable via the `spl_autoload_register` loader in `TUTOR\RestAPI` which loads the plugin's own bundled PayPal Composer autoloader, writing attacker-controlled content to an attacker-specified filename. This has an unauthenticated pathway when user registration is enabled, which is common for students and teachers to register, and it requires the monetization feature to be enabled.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 13:26 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2250 records in the last 180 days details
Impacted products
Show details on NVD website

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CVE-2026-78165 (GCVE-0-2026-78165)

Vulnerability from cvelistv5 – Published: 2026-10-19 10:08 – Updated: 2026-10-20 13:08
VLAI
Title
Apache Camel: Camel-Spring-Redis Unfiltered Java Deserialization of Redis Payloads
Summary
Deserialization of Untrusted Data vulnerability in Apache Camel Spring Redis component. This issue affects Apache Camel: from 2.11.0 before 4.18.5, from 4.19.0 before 4.22.1. RedisConfiguration.getSerializer lazily built a bare JdkSerializationRedisSerializer whenever no serializer option was configured, and that instance was used for every read the component performs. Spring's implementation delegates through DeserializingConverter to DefaultDeserializer, which reads the bytes with a ConfigurableObjectInputStream and installs no java.io.ObjectInputFilter on the stream, so an arbitrary serialized class graph was materialised and its readObject method executed. RedisConsumer.setBody applied that serializer to the raw bytes of every message published to the subscribed channels, before the Exchange was constructed and therefore before any route logic could inspect the message, so an actor able to issue PUBLISH on a subscribed channel reached the deserialization sink directly. The same default serializer backed the RedisTemplate built by RedisConfiguration.createDefaultTemplate, so the producer read commands GET, HGET, HGETALL and HVALS deserialized whatever was stored in the Redis keyspace, and SpringRedisIdempotentRepository shared that template. Configuring a custom redisTemplate did not close the consumer path, because RedisConsumer.setBody reads getSerializer directly rather than the serializer attached to the template, so a deployment that had wired a String serializer into its own template remained exposed on the consumer side unless it also set the serializer option. The component never constructed a java.io.ObjectInputStream itself, which is why earlier passes over the Camel codebase for unfiltered Java deserialization did not reach it. The behaviour dates back to the introduction of the component, first released in 2.11.0, and was unchanged until this fix. Users are recommended to upgrade to version 4.23.0, which fixes the issue. If users are on the 4.22.x releases stream, then they are suggested to upgrade to 4.22.1. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.5. The 4.14.x releases stream and earlier reached end of life before this issue was resolved and will not receive a fix, so deployments on those lines must move to a supported release. For deployments that cannot upgrade immediately, set the JVM-wide jdk.serialFilter system property, which the affected code path honours because it reads through a java.io.ObjectInputStream, for example -Djdk.serialFilter=!java.net.**;java.**;javax.**;org.apache.camel.**;!* ; or set the serializer endpoint option to a serializer that does not use Java serialization, such as StringRedisSerializer, noting that this must be set as the serializer option and not only on a custom redisTemplate. As defence in depth, require authentication on the Redis instance and restrict which clients may publish to the subscribed channels, and do not expose a Redis instance consumed by Camel to untrusted networks.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 03:55 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1056 records in the last 180 days details
Impacted products
Vendor Product Version
Apache Software Foundation Apache Camel Affected: 2.11.0 , < 4.18.5 (maven)
Affected: 4.19.0 , < 4.22.1 (maven)
Unaffected: 4.18.5 (maven)
Unaffected: 4.22.1 (maven)
Unaffected: 4.23.0 (maven)
Create a notification for this product.
Show details on NVD website

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CVE-2026-78162 (GCVE-0-2026-78162)

Vulnerability from cvelistv5 – Published: 2026-10-19 10:03 – Updated: 2026-10-20 03:55
VLAI
Title
Apache Camel: Camel-Hazelcast Managed Instances Missing Java Deserialization Filter (Incomplete Fix for CVE-2026-43865)
Summary
Deserialization of Untrusted Data vulnerability in Apache Camel. This issue affects Apache Camel: from 4.0.0 before 4.18.5, from 4.19.0 before 4.22.1. The camel-hazelcast component applies a default Hazelcast JavaSerializationFilterConfig to the instances it creates from its own configuration, a protection introduced by CVE-2026-43865. That change did not reach two of the configuration paths Camel builds itself, so those paths continued to create Hazelcast instances whose Java deserialization is unrestricted. ReplicatedHazelcastAggregationRepository extends HazelcastAggregationRepository but overrides doStart() without calling super.doStart(), keeping its own copy of the bootstrap block, and therefore never received the filter: a route using it without supplying a hazelcastInstance starts a Hazelcast member that deserializes values read from the backing ReplicatedMap with no class restriction. HazelcastDefaultComponent#getOrCreateHzClientInstance() builds its own ClientConfig when hazelcastMode=client is selected and neither a referenced ClientConfig nor hazelcastConfigUri is supplied, and likewise applied no filter, so client-mode endpoints behaved differently from node-mode endpoints for an otherwise identical configuration. In both cases an attacker able to publish into the Hazelcast cluster that the affected instance is attached to can cause a serialized Java object of their choosing to be deserialized inside Hazelcast's own serialization layer, before Camel processes the exchange, resulting in remote code execution. Hazelcast clusters have neither authentication nor TLS enabled by default. Selecting client mode is a topology choice rather than a security option, so neither path required the deployment to opt in to unsafe behaviour. Users are recommended to upgrade to version 4.23.0, which fixes the issue. If users are on the 4.22.x releases stream, then they are suggested to upgrade to 4.22.1. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.5. The 4.14.x releases stream and earlier reached end of life before this issue was resolved and will not receive a fix, so deployments on those lines must move to a supported release. For deployments that cannot upgrade immediately, supply an explicit Hazelcast configuration carrying a JavaSerializationFilterConfig, or inject a pre-built HazelcastInstance, since a user-supplied configuration is never overwritten by Camel. Alternatively set the JVM-wide filter -Djdk.serialFilter=!java.net.;java.;javax.;org.apache.camel.;!* and enable Hazelcast cluster authentication and TLS to restrict who can reach the cluster.
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 00:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1056 records in the last 180 days details
Impacted products
Vendor Product Version
Apache Software Foundation Apache Camel Affected: 4.0.0 , < 4.18.5 (maven)
Affected: 4.19.0 , < 4.22.1 (maven)
Unaffected: 4.18.5 (maven)
Unaffected: 4.22.1 (maven)
Unaffected: 4.23.0 (maven)
Create a notification for this product.
Show details on NVD website

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CVE-2026-78147 (GCVE-0-2026-78147)

Vulnerability from cvelistv5 – Published: 2026-08-23 23:00 – Updated: 2026-08-27 14:37
VLAI
Title
ggml-org llama.cpp ggml-RPC Server ggml-rpc.cpp deserialize_tensor deserialization
Summary
A vulnerability was found in ggml-org llama.cpp bec4772f6. The impacted element is the function deserialize_tensor of the file ggml/src/ggml-rpc/ggml-rpc.cpp of the component ggml-RPC Server. Performing a manipulation of the argument op/op_params results in deserialization. The attack may be initiated remotely. This vulnerability is distinct from CVE-2026-34159 (GHSA-j8rj-fmpv-wcxw, PR #20908), which only added a buffer==nullptr rejection in create_node() and does not validate op or op_params. The reported GitHub issue was closed automatically due to inactivity.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 13:21 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3957 records in the last 180 days details
References
Impacted products
Vendor Product Version
ggml-org llama.cpp Affected: bec4772f6
    cpe:2.3:a:ggml-org:llama.cpp:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-78032 (GCVE-0-2026-78032)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:11 – Updated: 2026-08-28 16:10
VLAI
Summary
SOY CMS contains an issue with deserialization of untrusted data. An arbitrary code may be executed by an attacker with the web server privilege.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:10 UTC
CWE
  • CWE-502 - Deserialization of untrusted data
Assigner
jpcert CNA under the jpcert root
CNA scorecard C 64/100 over 176 records in the last 180 days details
Impacted products
Vendor Product Version
Tsuyoshi Saito SOY CMS Affected: 0 , ≤ 3.24.0 (semver)
Create a notification for this product.
Show details on NVD website

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Mitigation
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.

Mitigation
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.

Mitigation
Implementation

Explicitly define a final object() to prevent deserialization.

Mitigation
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.
Mitigation
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.

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.

Mitigation MIT-29
Operation

Strategy: Firewall

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].

CAPEC-586: Object Injection

An adversary attempts to exploit an application by injecting additional, malicious content during its processing of serialized objects. Developers leverage serialization in order to convert data or state into a static, binary format for saving to disk or transferring over a network. These objects are then deserialized when needed to recover the data/state. By injecting a malformed object into a vulnerable application, an adversary can potentially compromise the application by manipulating the deserialization process. This can result in a number of unwanted outcomes, including remote code execution.