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.
4834 vulnerabilities reference this CWE, most recent first.
CVE-2025-27130 (GCVE-0-2025-27130)
Vulnerability from cvelistv5 – Published: 2025-04-01 08:57 – Updated: 2025-04-01 15:16
VLAI
EPSS
VEX
Summary
Welcart e-Commerce 2.11.6 and earlier versions contains an untrusted data deserialization vulnerability. If this vulnerability is exploited, arbitrary code may be executed by a remote unauthenticated attacker who can access websites created using the product.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Welcart Inc. | Welcart e-Commerce |
Affected:
2.11.6 and earlier versions
|
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CVE-2025-26999 (GCVE-0-2025-26999)
Vulnerability from cvelistv5 – Published: 2025-03-03 13:30 – Updated: 2026-04-28 16:11
VLAI
EPSS
VEX
Title
WordPress ProfileGrid Plugin <= 5.9.4.3 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Metagauss ProfileGrid profilegrid-user-profiles-groups-and-communities allows Object Injection.This issue affects ProfileGrid : from n/a through <= 5.9.4.3.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Metagauss | ProfileGrid |
Affected:
0 , ≤ 5.9.4.3
(custom)
|
Date Public
2026-04-01 16:35
Credits
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CVE-2025-26967 (GCVE-0-2025-26967)
Vulnerability from cvelistv5 – Published: 2025-03-03 13:30 – Updated: 2026-04-28 16:11
VLAI
EPSS
VEX
Title
WordPress Events Calendar for GeoDirectory plugin <= 2.3.14 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Stiofan Events Calendar for GeoDirectory events-for-geodirectory allows Object Injection.This issue affects Events Calendar for GeoDirectory: from n/a through <= 2.3.14.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Stiofan | Events Calendar for GeoDirectory |
Affected:
0 , ≤ 2.3.14
(custom)
|
Date Public
2026-04-01 16:35
Credits
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CVE-2025-26921 (GCVE-0-2025-26921)
Vulnerability from cvelistv5 – Published: 2025-03-15 21:57 – Updated: 2026-04-28 16:11
VLAI
EPSS
VEX
Title
WordPress Booking and Rental Manager Plugin <= 2.2.6 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in magepeopleteam Booking and Rental Manager booking-and-rental-manager-for-woocommerce allows Object Injection.This issue affects Booking and Rental Manager: from n/a through <= 2.2.6.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| magepeopleteam | Booking and Rental Manager |
Affected:
0 , ≤ 2.2.6
(custom)
|
Date Public
2026-04-01 16:35
Credits
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CVE-2025-26900 (GCVE-0-2025-26900)
Vulnerability from cvelistv5 – Published: 2025-02-25 14:17 – Updated: 2026-04-28 16:11
VLAI
EPSS
VEX
Title
WordPress Flexmls® IDX Plugin Plugin <= 3.14.27 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in flexmls Flexmls® IDX flexmls-idx allows Object Injection.This issue affects Flexmls® IDX: from n/a through <= 3.14.27.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| flexmls | Flexmls® IDX |
Affected:
0 , ≤ 3.14.27
(custom)
|
Date Public
2026-04-01 16:35
Credits
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CVE-2025-26885 (GCVE-0-2025-26885)
Vulnerability from cvelistv5 – Published: 2025-03-03 13:30 – Updated: 2026-04-29 09:51
VLAI
EPSS
VEX
Title
WordPress Assistant Plugin <= 1.5.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Beaver Builder WordPress Assistant assistant allows Object Injection.This issue affects WordPress Assistant: from n/a through <= 1.5.1.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Beaver Builder | WordPress Assistant |
Affected:
0 , ≤ 1.5.1
(custom)
|
Date Public
2026-04-01 16:35
Credits
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CVE-2025-26873 (GCVE-0-2025-26873)
Vulnerability from cvelistv5 – Published: 2025-03-27 21:59 – Updated: 2026-04-28 16:11
VLAI
EPSS
VEX
Title
WordPress Traveler theme <= 3.1.8 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in shinetheme Traveler traveler.This issue affects Traveler: from n/a through < 3.2.1.
Severity
9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Theme/t… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| shinetheme | Traveler |
Affected:
0 , ≤ 3.2.1
(custom)
|
Date Public
2026-04-01 16:35
Credits
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CVE-2025-26866 (GCVE-0-2025-26866)
Vulnerability from cvelistv5 – Published: 2025-12-12 09:23 – Updated: 2026-02-26 16:07
VLAI
EPSS
VEX
Title
Apache HugeGraph-Server: RAFT and deserialization vulnerability
Summary
A remote code execution vulnerability exists where a malicious Raft node can exploit insecure Hessian deserialization within the PD store. The fix enforces IP-based authentication to restrict cluster membership and implements a strict class whitelist to harden the Hessian serialization process against object injection attacks.
Users are recommended to upgrade to version 1.7.0, which fixes the issue.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache HugeGraph-Server |
Affected:
1.0.0 , < 1.7.0
(maven)
|
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CVE-2025-26763 (GCVE-0-2025-26763)
Vulnerability from cvelistv5 – Published: 2025-02-22 15:52 – Updated: 2026-04-28 16:11
VLAI
EPSS
VEX
Title
WordPress Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider Plugin <= 3.94.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider ml-slider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through <= 3.94.0.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MetaSlider | Responsive Slider by MetaSlider |
Affected:
0 , ≤ 3.94.0
(custom)
|
Date Public
2026-04-01 16:35
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CVE-2025-26399 (GCVE-0-2025-26399)
Vulnerability from cvelistv5 – Published: 2025-09-23 05:07 – Updated: 2026-03-10 03:55
VLAI
EPSS
VEX
Title
SolarWinds Web Help Desk Deserialization of Untrusted Data Privilege Escalation Vulnerability
Summary
SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.solarwinds.com/trust-center/security-… | |
| https://documentation.solarwinds.com/en/success_c… | |
| https://www.microsoft.com/en-us/security/blog/202… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SolarWinds | Web Help Desk |
Affected:
12.8.7 and below
|
Credits
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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.