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.

5115 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.
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 2026-08-28 18:19 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
INFINITUM FORM Geo Controller Affected: n/a , ≤ 8.9.8 (custom)
Create a notification for this product.
Credits
Supakiad S. (m3ez) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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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.
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 2026-08-27 14:28 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
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.
Credits
Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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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.
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 2026-08-25 14:40 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Nexcess The Events Calendar Affected: n/a , ≤ 6.17.2 (custom)
Create a notification for this product.
Credits
Udin Chan | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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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.
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 2026-08-27 14:24 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
weDevs WP Project Manager Affected: n/a , ≤ 4.0.6 (custom)
Create a notification for this product.
Credits
20kilograma | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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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.
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 2026-08-27 12:36 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
magepeopleteam Booking and Rental Manager Affected: n/a , ≤ 2.7.5 (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-2026-78147 (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.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
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
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.
Credits
m00dy (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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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.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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
References
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
To clipboard 

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CVE-2026-77646 (GCVE-0-2026-77646)

Vulnerability from cvelistv5 – Published: 2026-08-20 22:11 – Updated: 2026-08-21 20:08
VLAI
Title
Server Side Request Forgery (SSRF) vulnerability reported in Windchill
Summary
A Server-Side Request Forgery (SSRF) vulnerability has been reported in PTC Windchill PDMLink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/AU:Y/R:U/V:D/RE:M/U:Red
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:49 UTC
CWE
  • CWE-502 - Deserialization of untrusted data
  • CWE-918 - Server-Side request forgery (SSRF)
Assigner
References
URL Tags
https://www.ptc.com/en/support/article/CS474826 vendor-advisorymitigationpermissions-required
Impacted products
Vendor Product Version
PTC Windchill PDMLink Affected: 11.0 M030
Affected: 11.1 M020
Affected: 11.2.1.0
Affected: 12.0.2.0
Affected: 12.1.2.0
Affected: 13.0.2.0
Affected: 13.1.0.0
Affected: 13.1.1.0
Affected: 13.1.2.0
Affected: 13.1.3.0
Create a notification for this product.
PTC FlexPLM Affected: 11.0 M030
Affected: 11.1 M020
Affected: 11.2.1.0
Affected: 12.0.0.0
Affected: 12.0.2.0
Affected: 12.0.3.0
Affected: 12.1.2.0
Affected: 12.1.3.0
Affected: 13.0.2.0
Affected: 13.0.3.0
Create a notification for this product.
Credits
Richard Clifford of Rootshell Security (https://www.rootshellsecurity.net/)
Show details on NVD website
To clipboard 

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CVE-2026-77645 (GCVE-0-2026-77645)

Vulnerability from cvelistv5 – Published: 2026-08-20 22:08 – Updated: 2026-08-22 03:55
VLAI
Title
Critical Remote Code Execution (RCE) vulnerability reported in Windchill
Summary
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/AU:Y/R:U/V:C/RE:M/U:Red
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 00:00 UTC
CWE
  • CWE-20 - Improper input validation
  • CWE-502 - Deserialization of untrusted data
Assigner
References
URL Tags
https://www.ptc.com/en/support/article/CS474826 vendor-advisorymitigationpermissions-required
Impacted products
Vendor Product Version
PTC Windchill PDMLink Affected: 11.0 M030
Affected: 11.1 M020
Affected: 11.2.1.0
Affected: 12.0.2.0
Affected: 12.1.2.0
Affected: 13.0.2.0
Affected: 13.1.0.0
Affected: 13.1.1.0
Affected: 13.1.2.0
Affected: 13.1.3.0
Create a notification for this product.
PTC FlexPLM Affected: 11.0 M030
Affected: 11.1 M020
Affected: 11.2.1.0
Affected: 12.0.0.0
Affected: 12.0.2.0
Affected: 12.0.3.0
Affected: 12.1.2.0
Affected: 12.1.3.0
Affected: 13.0.2.0
Affected: 13.0.3.0
Create a notification for this product.
Credits
Arthur Aires (https://arthurair.es/) brenocss (LinkedIn: @brenocss) Bruno Milreu (LinkedIn: @bruno-milreu)
Show details on NVD website
To clipboard 

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CVE-2026-77138 (GCVE-0-2026-77138)

Vulnerability from cvelistv5 – Published: 2026-08-25 09:00 – Updated: 2026-08-25 14:05
VLAI
Title
Remote Code Execution in extension "HTML5 Video Player vs. Powermail" (html5videoplayer_powermail)
Summary
The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize(). A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:04 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Date Public
2026-08-25 09:00
Credits
Torben Hansen
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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