Common Weakness Enumeration

CWE-502

Allowed

Deserialization of Untrusted Data

Abstraction: Base · Status: Draft

API response cwe.mitre.org

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

4794 vulnerabilities reference this CWE, most recent first.

CVE-2026-40858 (GCVE-0-2026-40858)

Vulnerability from cvelistv5 – Published: 2026-04-27 09:38 – Updated: 2026-07-15 01:00
VLAI
Title
Apache Camel: Camel-Infinispan: Unsafe Deserialization in Remote Aggregation Repository
Summary
The camel-infinispan component's ProtoStream-based remote aggregation repository deserializes data read from a remote Infinispan cache using java.io.ObjectInputStream without applying any ObjectInputFilter. An attacker who can write to the Infinispan cache used by a Camel application can inject a crafted serialized Java object that, when read during normal aggregation repository operations such as get or recover, results in arbitrary code execution in the context of the application. This issue affects Apache Camel: from 4.0.0 before 4.14.7, from 4.15.0 before 4.18.2, from 4.19.0 before 4.20.0. Users are recommended to upgrade to version 4.20.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.7. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.2. The JIRA ticket: https://issues.apache.org/jira/browse/CAMEL-23322 refers to the various commits that resolved the issue, and have more details. This issue follows the same class of vulnerability previously addressed in CVE-2024-22369, CVE-2024-23114 and CVE-2026-25747.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Camel Affected: 4.0.0 , < 4.14.7 (semver)
Affected: 4.15.0 , < 4.18.2 (semver)
Affected: 4.19.0 , < 4.20.0 (semver)
Create a notification for this product.
Red Hat Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14     cpe:/a:redhat:apache_camel_spring_boot:4.18
 Create a notification for this product.
Red Hat Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14 Unaffected: infinispan-common , < * (rpm)
Unaffected: infinispan-embedded , < * (rpm)
    cpe:/a:redhat:apache_camel_spring_boot:4.18
 Create a notification for this product.
Red Hat Red Hat Build of Apache Camel 4.18 for Quarkus 3.33     cpe:/a:redhat:apache_camel_quarkus:3.33
 Create a notification for this product.
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3     cpe:/a:redhat:camel_quarkus:3
 Create a notification for this product.
Red Hat Red Hat Fuse 7     cpe:/a:redhat:jboss_fuse:7
 Create a notification for this product.
Red Hat Red Hat JBoss Enterprise Application Platform 8     cpe:/a:redhat:jboss_enterprise_application_platform:8
 Create a notification for this product.
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
 Create a notification for this product.
Credits
Feng Ning from Innora Pte. Ltd.
Show details on NVD website
To clipboard 

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CVE-2026-40761 (GCVE-0-2026-40761)

Vulnerability from cvelistv5 – Published: 2026-06-16 20:57 – Updated: 2026-06-17 10:37
VLAI
Title
WordPress Valeska theme <= 1.2.2 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Valeska <= 1.2.2 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Edge-Themes Valeska Affected: n/a , ≤ 1.2.2 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-40760 (GCVE-0-2026-40760)

Vulnerability from cvelistv5 – Published: 2026-06-16 20:57 – Updated: 2026-06-17 10:37
VLAI
Title
WordPress Behold theme <= 1.5 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Behold <= 1.5 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Edge-Themes Behold Affected: n/a , ≤ 1.5 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-40759 (GCVE-0-2026-40759)

Vulnerability from cvelistv5 – Published: 2026-06-16 20:57 – Updated: 2026-06-17 10:37
VLAI
Title
WordPress Esmée theme <= 1.4 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Esmée <= 1.4 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Mikado-Themes Esmée Affected: n/a , ≤ 1.4 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-40758 (GCVE-0-2026-40758)

Vulnerability from cvelistv5 – Published: 2026-06-16 20:57 – Updated: 2026-06-17 10:38
VLAI
Title
WordPress Léonie theme <= 1.2.1 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Léonie <= 1.2.1 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Elated-Themes Léonie Affected: n/a , ≤ 1.2.1 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-40757 (GCVE-0-2026-40757)

Vulnerability from cvelistv5 – Published: 2026-06-17 12:47 – Updated: 2026-06-17 15:28
VLAI
Title
WordPress Château theme <= 1.2.1 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Château <= 1.2.1 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Mikado-Themes Château Affected: n/a , ≤ 1.2.1 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-40756 (GCVE-0-2026-40756)

Vulnerability from cvelistv5 – Published: 2026-06-17 12:47 – Updated: 2026-06-17 14:24
VLAI
Title
WordPress Zoya theme <= 1.4 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Zoya <= 1.4 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Mikado-Themes Zoya Affected: n/a , ≤ 1.4 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-40755 (GCVE-0-2026-40755)

Vulnerability from cvelistv5 – Published: 2026-06-16 20:57 – Updated: 2026-06-17 10:38
VLAI
Title
WordPress TechLink theme <= 1.3 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in TechLink <= 1.3 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Mikado-Themes TechLink Affected: n/a , ≤ 1.3 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-40754 (GCVE-0-2026-40754)

Vulnerability from cvelistv5 – Published: 2026-06-16 20:57 – Updated: 2026-06-17 10:38
VLAI
Title
WordPress Roisin theme <= 1.4 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Roisin <= 1.4 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Elated-Themes Roisin Affected: n/a , ≤ 1.4 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-40753 (GCVE-0-2026-40753)

Vulnerability from cvelistv5 – Published: 2026-06-17 09:51 – Updated: 2026-06-17 14:35
VLAI
Title
WordPress EasyMeals theme <= 1.5.1 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in EasyMeals <= 1.5.1 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Mikado-Themes EasyMeals Affected: n/a , ≤ 1.5.1 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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    "dateReserved": "2026-04-15T09:20:25.914Z",
    "dateUpdated": "2026-06-17T14:35:37.952Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
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.

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