Common Weakness Enumeration
CWE-502
AllowedDeserialization of Untrusted Data
Abstraction: Base · Status: Draft
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
2663 vulnerabilities reference this CWE, most recent first.
CVE-2026-113356 (GCVE-0-2026-113356)
Vulnerability from cvelistv5 – Published: 2026-10-20 10:41 – Updated: 2026-10-20 16:06
VLAI
EPSS
VEX
Title
DokuWiki before 2026-07-14c PHP Object Injection via Draft Race Condition
Summary
DokuWiki before 2026-07-14c contains a PHP object injection vulnerability in Draft::getDraftText() that passes draft file contents to unserialize() without restricting allowed classes. Authenticated users with edit rights can race concurrent draft rewrites to splice serialized data, instantiating gadgets like MemoryIndex or Installer for arbitrary file write, deletion, and code execution.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 16:03 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/dokuwiki/dokuwiki/issues/4752 | issue-tracking |
| https://gist.github.com/sebastianosrt/a0c0252ca33… | exploittechnical-description |
| https://github.com/dokuwiki/dokuwiki/commit/15318… | patch |
| https://github.com/dokuwiki/dokuwiki/releases/tag… | release-notes |
| https://github.com/dokuwiki/dokuwiki/blob/b61db59… | technical-description |
| https://www.vulncheck.com/advisories/dokuwiki-bef… | third-party-advisory |
Impacted products
Date Public
2026-09-02 17:46
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CVE-2026-112862 (GCVE-0-2026-112862)
Vulnerability from cvelistv5 – Published: 2026-10-23 08:00 – Updated: 2026-10-23 10:56 X_Open Source
VLAI
EPSS
VEX
Title
WordPress Participants Database plugin <= 2.7.8.5 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in xnau webdesign Participants Database participants-database allows Object Injection.This issue affects Participants Database: from n/a through 2.7.8.5.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 10:40 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| xnau webdesign | Participants Database |
Affected:
0 , ≤ 2.7.8.5
(custom)
|
Date Public
2026-10-21 07:53
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CVE-2026-112859 (GCVE-0-2026-112859)
Vulnerability from cvelistv5 – Published: 2026-10-23 13:00 – Updated: 2026-10-24 14:47
VLAI
EPSS
VEX
Title
WordPress Little Birdies theme <= 1.3.16 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Little Birdies little-birdies allows Object Injection.This issue affects Little Birdies: from n/a through 1.3.16.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-24 14:43 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/l… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ThemeREX Group | Little Birdies |
Affected:
0 , ≤ 1.3.16
(custom)
|
Date Public
2026-10-21 11:51
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CVE-2026-112858 (GCVE-0-2026-112858)
Vulnerability from cvelistv5 – Published: 2026-10-23 13:00 – Updated: 2026-10-24 14:47
VLAI
EPSS
VEX
Title
WordPress Rhodos theme <= 1.3.3 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in axiomthemes Rhodos rhodos allows Object Injection.This issue affects Rhodos: from n/a through 1.3.3.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-24 14:42 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/r… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| axiomthemes | Rhodos |
Affected:
0 , ≤ 1.3.3
(custom)
|
Date Public
2026-10-21 11:51
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CVE-2026-112857 (GCVE-0-2026-112857)
Vulnerability from cvelistv5 – Published: 2026-10-23 13:00 – Updated: 2026-10-23 14:59 X_Open Source
VLAI
EPSS
VEX
Title
WordPress Reprizo theme <= 1.0.8 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in axiomthemes Reprizo reprizo allows Object Injection.This issue affects Reprizo: from n/a through 1.0.8.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 14:55 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/r… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| axiomthemes | Reprizo |
Affected:
0 , ≤ 1.0.8
(custom)
|
Date Public
2026-10-21 11:51
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CVE-2026-112856 (GCVE-0-2026-112856)
Vulnerability from cvelistv5 – Published: 2026-10-23 13:00 – Updated: 2026-10-24 14:47
VLAI
EPSS
VEX
Title
WordPress Vagabonds theme <= 1.3.10 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Vagabonds vagabonds allows Object Injection.This issue affects Vagabonds: from n/a through 1.3.10.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-24 14:42 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/v… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ThemeREX Group | Vagabonds |
Affected:
0 , ≤ 1.3.10
(custom)
|
Date Public
2026-10-21 11:52
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CVE-2026-112855 (GCVE-0-2026-112855)
Vulnerability from cvelistv5 – Published: 2026-10-23 13:00 – Updated: 2026-10-24 14:47
VLAI
EPSS
VEX
Title
WordPress Redy theme <= 1.3.5 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in axiomthemes Redy redy allows Object Injection.This issue affects Redy: from n/a through 1.3.5.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-24 14:43 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/r… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| axiomthemes | Redy |
Affected:
0 , ≤ 1.3.5
(custom)
|
Date Public
2026-10-21 11:51
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CVE-2026-112854 (GCVE-0-2026-112854)
Vulnerability from cvelistv5 – Published: 2026-10-23 13:00 – Updated: 2026-10-24 14:46
VLAI
EPSS
VEX
Title
WordPress Holistic Center theme <= 1.2.6 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in axiomthemes Holistic Center holistic-center allows Object Injection.This issue affects Holistic Center: from n/a through 1.2.6.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-24 14:42 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/h… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| axiomthemes | Holistic Center |
Affected:
0 , ≤ 1.2.6
(custom)
|
Date Public
2026-10-21 12:20
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CVE-2026-112853 (GCVE-0-2026-112853)
Vulnerability from cvelistv5 – Published: 2026-10-23 13:00 – Updated: 2026-10-23 14:59
VLAI
EPSS
VEX
Title
WordPress Hallelujah theme <= 1.1.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in axiomthemes Hallelujah hallelujah allows Object Injection.This issue affects Hallelujah: from n/a through 1.1.1.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 14:55 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/h… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| axiomthemes | Hallelujah |
Affected:
0 , ≤ 1.1.1
(custom)
|
Date Public
2026-10-21 11:52
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CVE-2026-112852 (GCVE-0-2026-112852)
Vulnerability from cvelistv5 – Published: 2026-10-23 13:00 – Updated: 2026-10-24 14:47
VLAI
EPSS
VEX
Title
WordPress Helion theme <= 1.1.12 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ThemeREX Group Helion helion allows Object Injection.This issue affects Helion: from n/a through 1.1.12.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-24 14:42 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/h… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ThemeREX Group | Helion |
Affected:
0 , ≤ 1.1.12
(custom)
|
Date Public
2026-10-21 11:52
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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.