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.

5154 vulnerabilities reference this CWE, most recent first.

CVE-2026-74012 (GCVE-0-2026-74012)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:00 – Updated: 2026-08-20 18:20 X_Open Source
VLAI
Title
WordPress TaxoPress plugin <= 3.51.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in TaxoPress allows Object Injection. This issue affects TaxoPress: from n/a through 3.51.0.
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 · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 14:41 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
TaxoPress TaxoPress Affected: n/a , ≤ 3.51.0 (custom)
Create a notification for this product.
Credits
daroo | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73993 (GCVE-0-2026-73993)

Vulnerability from cvelistv5 – Published: 2026-08-20 12:07 – Updated: 2026-08-20 16:27
VLAI
Title
WordPress FundEngine plugin <= 1.7.9 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in FundEngine <= 1.7.9 versions.
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 2026-08-20 16:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Roxnor FundEngine Affected: n/a , ≤ 1.7.9 (custom)
Create a notification for this product.
Credits
Taylsec | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73397 (GCVE-0-2026-73397)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:00 – Updated: 2026-08-18 14:40
VLAI
Title
WordPress Youzify plugin <= 1.3.7 - Deserialization of untrusted data vulnerability
Summary
Unauthenticated Deserialization of untrusted data in Youzify <= 1.3.7 versions.
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 2026-08-18 14:39 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Youzify Youzify Affected: n/a , ≤ 1.3.7 (custom)
Create a notification for this product.
Credits
Peter Thaleikis | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73389 (GCVE-0-2026-73389)

Vulnerability from cvelistv5 – Published: 2026-08-19 12:38 – Updated: 2026-08-20 15:57
VLAI
Title
WordPress Kalles Addons plugin <= 1.0.6 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Kalles Addons <= 1.0.6 versions.
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 2026-08-20 15:30 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
The4 Kalles Addons Affected: n/a , ≤ 1.0.6 (custom)
Create a notification for this product.
Credits
João Pedro S Alcântara (Kinorth) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73380 (GCVE-0-2026-73380)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:00 – Updated: 2026-08-18 15:11
VLAI
Title
WordPress Popup by Supsystic plugin <= 1.13.0 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Popup by Supsystic <= 1.13.0 versions.
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 2026-08-18 15:10 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
supsystic Popup by Supsystic Affected: n/a , ≤ 1.13.0 (custom)
Create a notification for this product.
Credits
Asim Alshaya | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73376 (GCVE-0-2026-73376)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:00 – Updated: 2026-08-18 14:44
VLAI
Title
WordPress Ultimate Maps by Supsystic plugin < 1.5.0 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Ultimate Maps by Supsystic < 1.5.0 versions.
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 2026-08-18 14:43 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
supsystic Ultimate Maps by Supsystic Affected: n/a , < 1.5.0 (custom)
Create a notification for this product.
Credits
Asim Alshaya | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73366 (GCVE-0-2026-73366)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:00 – Updated: 2026-08-18 14:38
VLAI
Title
WordPress Easy Google Maps plugin <= 1.13.0 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Easy Google Maps <= 1.13.0 versions.
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 2026-08-18 14:38 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
supsystic Easy Google Maps Affected: n/a , ≤ 1.13.0 (custom)
Create a notification for this product.
Credits
Asim Alshaya | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73364 (GCVE-0-2026-73364)

Vulnerability from cvelistv5 – Published: 2026-08-19 12:38 – Updated: 2026-08-19 19:29
VLAI
Title
WordPress Flexible Subscriptions plugin <= 1.8.1 - PHP Object Injection vulnerability
Summary
Customer PHP Object Injection in Flexible Subscriptions <= 1.8.1 versions.
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 2026-08-19 19:29 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
wpdesk Flexible Subscriptions Affected: n/a , ≤ 1.8.1 (custom)
Create a notification for this product.
Credits
Van Phuc | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73341 (GCVE-0-2026-73341)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:00 – Updated: 2026-08-18 19:48
VLAI
Title
WordPress RegistrationMagic plugin <= 6.0.9.7 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in RegistrationMagic <= 6.0.9.7 versions.
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 2026-08-18 19:34 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Metagauss RegistrationMagic Affected: n/a , ≤ 6.0.9.7 (custom)
Create a notification for this product.
Credits
dutafi | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-73325 (GCVE-0-2026-73325)

Vulnerability from cvelistv5 – Published: 2026-08-12 15:35 – Updated: 2026-08-25 01:15
VLAI
Title
Fujitsu OneCompression < 1.2.1 Arbitrary Code Execution via torch.load Deserialization
Summary
Fujitsu Research's OneCompression library before 1.2.1 contains an unsafe deserialization vulnerability that allows attackers to execute arbitrary code by supplying a crafted model.pt checkpoint file, as QuantizedModelLoader.load_quantized_model_pt() unconditionally calls torch.load with weights_only=False, invoking Python's pickle machinery during deserialization. Attackers can embed malicious __reduce__ methods in a crafted model checkpoint to execute arbitrary Python code, including system commands, when the library loads the file from a caller-selected model directory.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 2026-08-12 17:03 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Fujitsu Research OneCompression Affected: 0 , < 1.2.1 (custom)
Create a notification for this product.
Date Public
2026-08-12 00:00
Credits
Nir Yehoshua from Cipher Security Labs
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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