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.

5790 vulnerabilities reference this CWE, most recent first.

CVE-2026-93934 (GCVE-0-2026-93934)

Vulnerability from cvelistv5 – Published: 2026-10-10 07:00 – Updated: 2026-10-11 12:13
VLAI
Title
WordPress Partiso theme <= 1.1.13 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Partiso partiso allows Object Injection.This issue affects Partiso: from n/a through 1.1.13.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 11:59 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2963 records in the last 180 days details
References
Impacted products
Vendor Product Version
ThemeREX Group Partiso Affected: 0 , ≤ 1.1.13 (custom)
Create a notification for this product.
Date Public
2026-10-08 06:46
Credits
Bonds | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-93933 (GCVE-0-2026-93933)

Vulnerability from cvelistv5 – Published: 2026-10-10 07:00 – Updated: 2026-10-11 12:13
VLAI
Title
WordPress Rosalinda theme <= 1.2.4 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Rosalinda rosalinda allows Object Injection.This issue affects Rosalinda: from n/a through 1.2.4.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 11:59 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2963 records in the last 180 days details
References
Impacted products
Vendor Product Version
ThemeREX Group Rosalinda Affected: 0 , ≤ 1.2.4 (custom)
Create a notification for this product.
Date Public
2026-10-08 06:46
Credits
Bonds | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-93932 (GCVE-0-2026-93932)

Vulnerability from cvelistv5 – Published: 2026-10-10 07:00 – Updated: 2026-10-11 12:13
VLAI
Title
WordPress Smart Casa theme <= 1.0.12 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Smart Casa smart-casa allows Object Injection.This issue affects Smart Casa: from n/a through 1.0.12.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 12:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2963 records in the last 180 days details
References
Impacted products
Vendor Product Version
ThemeREX Group Smart Casa Affected: 0 , ≤ 1.0.12 (custom)
Create a notification for this product.
Date Public
2026-10-08 06:46
Credits
Bonds | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-93931 (GCVE-0-2026-93931)

Vulnerability from cvelistv5 – Published: 2026-10-10 07:00 – Updated: 2026-10-11 12:13
VLAI
Title
WordPress Smash theme <= 1.12.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Smash smash allows Object Injection.This issue affects Smash: from n/a through 1.12.0.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 12:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2963 records in the last 180 days details
References
Impacted products
Vendor Product Version
ThemeREX Group Smash Affected: 0 , ≤ 1.12.0 (custom)
Create a notification for this product.
Date Public
2026-10-08 06:46
Credits
Bonds | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-93930 (GCVE-0-2026-93930)

Vulnerability from cvelistv5 – Published: 2026-10-10 07:00 – Updated: 2026-10-11 12:13
VLAI
Title
WordPress Tantra theme <= 2.9.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Tantra tantra allows Object Injection.This issue affects Tantra: from n/a through 2.9.0.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 12:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2963 records in the last 180 days details
References
Impacted products
Vendor Product Version
ThemeREX Group Tantra Affected: 0 , ≤ 2.9.0 (custom)
Create a notification for this product.
Date Public
2026-10-08 06:46
Credits
Bonds | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-93929 (GCVE-0-2026-93929)

Vulnerability from cvelistv5 – Published: 2026-10-10 07:00 – Updated: 2026-10-11 12:13
VLAI
Title
WordPress Travesia theme <= 1.1.16 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Travesia travesia allows Object Injection.This issue affects Travesia: from n/a through 1.1.16.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 12:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2963 records in the last 180 days details
References
Impacted products
Vendor Product Version
ThemeREX Group Travesia Affected: 0 , ≤ 1.1.16 (custom)
Create a notification for this product.
Date Public
2026-10-08 06:45
Credits
Bonds | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-93927 (GCVE-0-2026-93927)

Vulnerability from cvelistv5 – Published: 2026-10-10 07:00 – Updated: 2026-10-11 12:13 X_Open Source
VLAI
Title
WordPress Veto theme <= 1.6.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Axiomthemes Veto veto allows Object Injection.This issue affects Veto: from n/a through 1.6.0.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 12:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2963 records in the last 180 days details
References
Impacted products
Vendor Product Version
Axiomthemes Veto Affected: 0 , ≤ 1.6.0 (custom)
Create a notification for this product.
Date Public
2026-10-08 06:45
Credits
Bonds | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-93905 (GCVE-0-2026-93905)

Vulnerability from cvelistv5 – Published: 2026-10-13 20:18 – Updated: 2026-10-14 18:35
VLAI
Title
IBM WebSphere Application Server Liberty is affected by a deserialization of untrusted data
Summary
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 could allow an unauthenticated remote attacker to corrupt the persisted status of batch job instances.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 18:34 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
ibm CNA under the mitre root
CNA scorecard B 88/100 over 1278 records in the last 180 days details
References
URL Tags
https://www.ibm.com/support/pages/node/7292232 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM WebSphere Application Server - Liberty Affected: 17.0.0.3 , ≤ 26.0.0.10 (semver)
    cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-93872 (GCVE-0-2026-93872)

Vulnerability from cvelistv5 – Published: 2026-09-18 19:56 – Updated: 2026-09-24 14:23
VLAI
Title
Cotonti 1.0.0 PHP Object Injection via Comments Plugin Edit Action cb Parameter
Summary
Cotonti 1.0.0 passes the base64-decoded cb parameter to unserialize() without allowed_classes restriction in the comments plugin EditAction. Registered users with comment write permissions can instantiate arbitrary PHP objects and potentially achieve file write or code execution through gadget chains.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 16:42 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6527 records in the last 180 days details
References
Impacted products
Vendor Product Version
Cotonti Cotonti Affected: 1.0.0 , ≤ 1.0.0 (custom)
    cpe:2.3:a:cotonti:cotonti_siena:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-17 00:00
Credits
Harsh Raj Singhania
Show details on NVD website
To clipboard 

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CVE-2026-93771 (GCVE-0-2026-93771)

Vulnerability from cvelistv5 – Published: 2026-09-30 12:26 – Updated: 2026-09-30 13:27
VLAI
Title
WordPress Cost of Goods for WooCommerce plugin <= 3.5.2 - PHP Object Injection vulnerability
Summary
Shop manager PHP Object Injection in Cost of Goods for WooCommerce <= 3.5.2 versions.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:07 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2963 records in the last 180 days details
References
Impacted products
Vendor Product Version
WPFactory Cost of Goods for WooCommerce Affected: n/a , ≤ 3.5.2 (custom)
Create a notification for this product.
Credits
Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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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.

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