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-2026-49781 (GCVE-0-2026-49781)

Vulnerability from cvelistv5 – Published: 2026-06-15 20:19 – Updated: 2026-06-16 01:17
VLAI
Title
WordPress OttoKit plugin <= 1.1.27 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in OttoKit <= 1.1.27 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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Brainstorm Force OttoKit Affected: n/a , ≤ 1.1.27 (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-2026-49770 (GCVE-0-2026-49770)

Vulnerability from cvelistv5 – Published: 2026-06-15 20:19 – Updated: 2026-06-16 01:18
VLAI
Title
WordPress WP Travel Engine plugin <= 6.7.12 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in WP Travel Engine <= 6.7.12 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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
WP Travel Engine WP Travel Engine Affected: n/a , ≤ 6.7.12 (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-2026-49769 (GCVE-0-2026-49769)

Vulnerability from cvelistv5 – Published: 2026-06-15 20:19 – Updated: 2026-06-16 15:38
VLAI
Title
WordPress wpForo Forum plugin <= 3.1.0 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in wpForo Forum <= 3.1.0 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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Tomdever wpForo Forum Affected: n/a , ≤ 3.1.0 (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-2026-49768 (GCVE-0-2026-49768)

Vulnerability from cvelistv5 – Published: 2026-06-15 20:19 – Updated: 2026-06-16 14:42
VLAI
Title
WordPress Happyforms plugin <= 1.26.13 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Happyforms <= 1.26.13 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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Happyforms Happyforms Affected: n/a , ≤ 1.26.13 (custom)
Create a notification for this product.
Credits
longnv719 | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-49765 (GCVE-0-2026-49765)

Vulnerability from cvelistv5 – Published: 2026-06-15 20:19 – Updated: 2026-06-16 12:21
VLAI
Title
WordPress Integration for Mailchimp and Contact Form 7, WPForms, Elementor, Ninja Forms plugin <= 1.1.8 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Integration for Mailchimp and Contact Form 7, WPForms, Elementor, Ninja Forms <= 1.1.8 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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Credits
Frissi0n | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-49763 (GCVE-0-2026-49763)

Vulnerability from cvelistv5 – Published: 2026-06-15 20:19 – Updated: 2026-07-08 19:43
VLAI
Title
WordPress Integration for Contact Form 7 HubSpot plugin <= 1.3.7 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Integration for Contact Form 7 HubSpot <= 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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
CRM Perks Integration for Contact Form 7 HubSpot Affected: n/a , ≤ 1.3.7 (custom)
Create a notification for this product.
Credits
Frissi0n | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-49740 (GCVE-0-2026-49740)

Vulnerability from cvelistv5 – Published: 2026-06-09 10:53 – Updated: 2026-07-15 12:49
VLAI
Title
TYPO3 CMS - Insecure Deserialization in Core API
Summary
TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry database table) could inject a crafted serialized payload to trigger PHP Object Injection, potentially exploiting a gadget chain to achieve Remote Code Execution or other high-impact effects. Exploiting this vulnerability requires direct local write access to the storage, such as the SQL database or file system. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.
Severity
6.3 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
TYPO3 TYPO3 CMS Affected: 0 , < 10.4.57 (semver)
Affected: 11.0.0 , < 11.5.51 (semver)
Affected: 12.0.0 , < 12.4.46 (semver)
Affected: 13.0.0 , < 13.4.31 (semver)
Affected: 14.0.0 , < 14.3.3 (semver)
Create a notification for this product.
Credits
z3rco Chowdhury Faizal Ahammed Rick Larabee Vitaly Simonovich Nozomu Sasaki Mert Akdag tikket Shafi Almutairi Oliver Hader
Show details on NVD website
To clipboard 

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CVE-2026-49286 (GCVE-0-2026-49286)

Vulnerability from cvelistv5 – Published: 2026-06-19 17:03 – Updated: 2026-06-22 14:23
VLAI
Title
PhpWeasyPrint vulnerable to PHAR deserialization via output filename (CVE-2023-28115 case-insensitive bypass)
Summary
PhpWeasyPrint is a PHP library allowing PDF generation from a URL or an HTML page. Prior to version 2.6.0, `pontedilana/php-weasyprint` guarded the output filename against the `phar://` stream wrapper with a case-sensitive blacklist. PHP stream wrappers are case-insensitive, so `PHAR://`, `Phar://`, etc. bypass the check and reach `fileExists()` (`file_exists()`) in `prepareOutput()`. On PHP 7 (which the library still supports — PHP 7.4+), this triggers deserialization of a crafted PHAR archive's metadata, leading to remote code execution. This is the patch-bypass of CVE-2023-28115. The same issue and fix were handled upstream in KnpLabs/snappy (GHSA-92rv-4j2h-8mjj). PhpWeasyPrint version 2.6.0 contains a patch for the issue.
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: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-49121 (GCVE-0-2026-49121)

Vulnerability from cvelistv5 – Published: 2026-06-01 17:09 – Updated: 2026-07-15 00:47 X_Open Source
VLAI
Title
AI Tensor Engine for ROCm (AITER) 0.1.14 Unauthenticated RCE via MessageQueue.recv() Pickle Deserialization
Summary
AI Tensor Engine for ROCm (AITER) through 0.1.14 contains an unauthenticated remote code execution vulnerability in the MessageQueue.recv() function within shm_broadcast.py that allows unauthenticated remote attackers to execute arbitrary code by sending a malicious pickle payload to a ZMQ SUB socket with no authentication, HMAC, or format validation. Attackers who can reach the writer XPUB endpoint on the cluster network or supply a forged Handle with an attacker-controlled remote_subscribe_addr can deliver a crafted pickle payload that executes arbitrary code simultaneously as the inference worker process on every remote reader worker.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Date Public
2026-05-07 00:00
Credits
YU SUN
Show details on NVD website
To clipboard 

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CVE-2026-49109 (GCVE-0-2026-49109)

Vulnerability from cvelistv5 – Published: 2026-06-15 20:19 – Updated: 2026-06-16 14:35
VLAI
Title
WordPress Integration for Salesforce and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms plugin <= 1.4.3 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Integration for Salesforce and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms <= 1.4.3 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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Credits
Frissi0n | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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    "dateUpdated": "2026-06-16T14:35:53.406Z",
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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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