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.

5785 vulnerabilities reference this CWE, most recent first.

CVE-2026-104392 (GCVE-0-2026-104392)

Vulnerability from cvelistv5 – Published: 2026-10-09 12:08 – Updated: 2026-10-09 20:01 X_Open Source
VLAI
Title
WordPress Quiz And Survey Master plugin <= 11.2.7 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ExpressTech Quiz And Survey Master quiz-master-next allows Object Injection.This issue affects Quiz And Survey Master: from n/a through 11.2.7.
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 2026-10-09 20:01 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2956 records in the last 180 days details
References
Impacted products
Vendor Product Version
ExpressTech Quiz And Survey Master Affected: 0 , ≤ 11.2.7 (custom)
Create a notification for this product.
Date Public
2026-10-07 11:20
Credits
Ananda Dhakal (Patchstack)
Show details on NVD website
To clipboard 

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CVE-2026-103877 (GCVE-0-2026-103877)

Vulnerability from cvelistv5 – Published: 2026-10-02 10:08 – Updated: 2026-10-07 22:07
VLAI
Title
Apache Directory LDAP API: Unsafe loading of Java code from LDAP schema elements
Summary
Deserialization of Untrusted Data vulnerability in Apache Directory LDAP API. A rogue/compromised LDAP server (or pre-TLS MITM) can answer a client's loadSchema() subschema search with a schema object that contains a serialized Java class, allowing some potential RCE.  This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. Users are recommended to upgrade to version 2.1.9, which fixes the issue.
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 2026-10-07 20:54 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1005 records in the last 180 days details
References
Impacted products
Credits
Claude Security The Apache Software Foundation
Show details on NVD website
To clipboard 

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CVE-2026-103831 (GCVE-0-2026-103831)

Vulnerability from cvelistv5 – Published: 2026-10-06 10:28 – Updated: 2026-10-06 10:48
VLAI
Title
Insecure deserialization in the TrueLayer Magento 2 plugin
Summary
CVE-2026-103831: Insecure deserialization vulnerability in the Psr16CacheAdapter component of the TrueLayer Magento 2 Plugin, due to the use of PHP's native unserialize() function without restrictions on the classes allowed when retrieving data stored in the cache. An attacker who already has the ability to write manipulated data to the cache backend used by Magento—such as Redis or Memcached—could inject specially crafted PHP objects and trigger their deserialization, potentially leading to arbitrary code execution via gadget strings available in the application environment. Exploitation therefore requires a prerequisite condition that allows writing to the cache infrastructure, either through access to the local file system or to a cache infrastructure accessible from the Magento environment.
Severity
7.5 (High)
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 10:48 UTC
CWE
  • CWE-502 - Deserialization of untrusted data
Assigner
INCIBE CNA under the INCIBE root
CNA scorecard B 85/100 over 119 records in the last 180 days details
References
Impacted products
Vendor Product Version
TrueLayer TrueLayer Magento 2 Plugin Affected: versions 2.4.0 through 2.4.2.
    cpe:2.3:a:truelayer:truelayer_magento_2_plugin:versions_2.4.0_through_2.4.2.:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-06 10:25
Credits
Gemma López Jiménez Víctor Flores Sánchez
Show details on NVD website
To clipboard 

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CVE-2026-103441 (GCVE-0-2026-103441)

Vulnerability from cvelistv5 – Published: 2026-09-30 15:59 – Updated: 2026-09-30 15:59
VLAI
Title
Unauthenticated arbitrary file deletion through Wikibase serialized entity parsing
Summary
Deserialization of untrusted data vulnerability in The Wikimedia Foundation MediaWiki Wikibase extension allows Leverage Executable Code in Non-Executable Files. This issue affects MediaWiki Wikibase extension: 1.46, 1.45, and 1.43.
Severity
7.2 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:I/V:C/RE:M/U:Red
CWE
  • CWE-502 - Deserialization of untrusted data
Assigner
wikimedia-foundation CNA under the mitre root
CNA scorecard C 69/100 over 81 records in the last 180 days details
References
Impacted products
Vendor Product Version
The Wikimedia Foundation MediaWiki Wikibase extension Affected: 1.46
Affected: 1.45
Affected: 1.43
Create a notification for this product.
Date Public
2026-09-30 15:46
Credits
Marco Paciaroni (BomboBombone)
Show details on NVD website
To clipboard 

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CVE-2026-103395 (GCVE-0-2026-103395)

Vulnerability from cvelistv5 – Published: 2026-09-30 14:48 – Updated: 2026-09-30 19:38
VLAI
Title
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Visual-Only RPyC Service
Summary
LightLLM through 1.2.0 visual_only deployments expose an unauthenticated RPyC service with allow_pickle enabled that deserializes attacker-supplied arguments in the remote_infer_images method. Attackers can reach the visual RPyC port and pass objects with __reduce__ methods to execute arbitrary code with service account privileges.
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
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 19:37 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6503 records in the last 180 days details
References
Impacted products
Vendor Product Version
ModelTC LightLLM Affected: 0 , ≤ 1.2.0 (semver)
Create a notification for this product.
Date Public
2026-09-30 00:00
Credits
Mingkai Yu Jiajia Liu
Show details on NVD website
To clipboard 

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CVE-2026-103349 (GCVE-0-2026-103349)

Vulnerability from cvelistv5 – Published: 2026-10-05 18:08 – Updated: 2026-10-06 10:41 X_Open Source
VLAI
Title
WordPress Product Feed PRO for WooCommerce plugin <= 13.5.7 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Rymera Web Co Product Feed PRO for WooCommerce woo-product-feed-pro allows Object Injection.This issue affects Product Feed PRO for WooCommerce: from n/a through 13.5.7.
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 2026-10-06 10:16 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2956 records in the last 180 days details
References
Impacted products
Vendor Product Version
Rymera Web Co Product Feed PRO for WooCommerce Affected: 0 , ≤ 13.5.7 (custom)
Create a notification for this product.
Date Public
2026-10-03 18:00
Credits
Ananda Dhakal (Patchstack)
Show details on NVD website
To clipboard 

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CVE-2026-103348 (GCVE-0-2026-103348)

Vulnerability from cvelistv5 – Published: 2026-10-05 19:00 – Updated: 2026-10-06 10:41 X_Open Source
VLAI
Title
WordPress WP Ultimate Exporter plugin <= 3.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Smackcoders Inc. WP Ultimate Exporter wp-ultimate-exporter allows Object Injection.This issue affects WP Ultimate Exporter: from n/a through 3.0.
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 2026-10-06 10:25 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2956 records in the last 180 days details
References
Impacted products
Vendor Product Version
Smackcoders Inc. WP Ultimate Exporter Affected: 0 , ≤ 3.0 (custom)
Create a notification for this product.
Date Public
2026-10-03 18:39
Credits
Ananda Dhakal (Patchstack)
Show details on NVD website
To clipboard 

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CVE-2026-103041 (GCVE-0-2026-103041)

Vulnerability from cvelistv5 – Published: 2026-09-29 22:51 – Updated: 2026-09-30 13:51
VLAI
Title
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Embed Cache RPyC Service
Summary
LightLLM through 1.2.0 multimodal deployments expose an unauthenticated RPyC cache service with pickle deserialization enabled on all interfaces. Attackers can send crafted serialized objects to exposed cache methods to execute arbitrary code with service privileges.
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
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:51 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6503 records in the last 180 days details
References
Impacted products
Vendor Product Version
ModelTC LightLLM Affected: 0 , ≤ 1.2.0 (semver)
Create a notification for this product.
Date Public
2026-09-29 00:00
Credits
Mingkai Yu Jiapeng Li Jiajia Liu
Show details on NVD website
To clipboard 

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CVE-2026-103040 (GCVE-0-2026-103040)

Vulnerability from cvelistv5 – Published: 2026-09-29 22:51 – Updated: 2026-09-30 13:59
VLAI
Title
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Router Profiler RPyC Service
Summary
LightLLM through 1.2.0 contains a remote code execution vulnerability in the router profiler service when started with --enable_profiling flag. The service exposes an unauthenticated RPyC server with pickle deserialization enabled, allowing attackers to execute arbitrary code by sending crafted serialized objects to the profiler command queue.
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
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:58 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6503 records in the last 180 days details
References
Impacted products
Vendor Product Version
ModelTC LightLLM Affected: 0 , ≤ 1.2.0 (semver)
Create a notification for this product.
Date Public
2026-09-29 00:00
Credits
Mingkai Yu Jiapeng Li Jiajia Liu
Show details on NVD website
To clipboard 

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CVE-2026-102554 (GCVE-0-2026-102554)

Vulnerability from cvelistv5 – Published: 2026-10-09 15:07 – Updated: 2026-10-09 18:09
VLAI
Title
Denial of Service via Eager Array Allocation During Deserialization in Guava
Summary
Allocation of resources without limits or throttling (CWE-770) during Java object deserialization in Google Guava versions 4.0 through 33.7.1 allows an attacker to cause a Denial of Service via OutOfMemoryError. When deserializing CompactHashMap, CompactHashSet, or MapMakerInternalMap instances, Guava eagerly allocates an array based on a caller-specified size parameter without throttling, permitting memory exhaustion from crafted serialization streams.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 18:09 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
  • CWE-502 - Deserialization of Untrusted Data
Assigner
Google CNA under the Google root
CNA scorecard B 76/100 over 35 records in the last 180 days details
References
Impacted products
Vendor Product Version
Google Guava Affected: 4.0 , < 33.7.2 (semver)
Create a notification for this product.
Credits
Kaya Emre Arikan (https://github.com/kemrec)
Show details on NVD website
To clipboard 

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    "assignerShortName": "Google",
    "cveId": "CVE-2026-102554",
    "datePublished": "2026-10-09T15:07:16.130Z",
    "dateReserved": "2026-09-29T13:06:27.848Z",
    "dateUpdated": "2026-10-09T18:09:50.100Z",
    "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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