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.
5305 vulnerabilities reference this CWE, most recent first.
CVE-2026-25614 (GCVE-0-2026-25614)
Vulnerability from cvelistv5 – Published: 2026-02-03 19:16 – Updated: 2026-02-05 06:19
VLAI
EPSS
VEX
Summary
Blesta 3.x through 5.x before 5.13.3 allows object injection, aka CORE-5680.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 20:57 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
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CVE-2026-25551 (GCVE-0-2026-25551)
Vulnerability from cvelistv5 – Published: 2026-06-04 17:20 – Updated: 2026-09-02 16:23
VLAI
EPSS
VEX
Title
Seagull Software BarTender Deserialization Privilege Escalation via .NET Remoting Service
Summary
Seagull Software BarTender 2021 R1 through 12.0.1 contains an insecure deserialization vulnerability that allows low-privileged local users to escalate privileges. The DataServiceSingleton .NET Remoting endpoint is bound to localhost on TCP port 7375 via BtSystem.Service.exe, limiting the attack surface to local access only. The endpoint is configured with BinaryServerFormatterSinkProvider and TypeFilterLevel set to Full. A low-privileged local attacker can send YSoSerial.NET-generated BinaryFormatter payloads to the localhost-bound endpoint to achieve code execution as NT AUTHORITY\\\\SYSTEM. The vulnerability was corrected in BarTender 12.1, released on August 14, 2026. Users should upgrade to BarTender 12.1 or later.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 18:27 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://trust.seagullsoftware.com/?tcuUid=55ed135… | vendor-advisorypatch |
| https://gist.github.com/VAMorales/dde5b1c0415a850… | technical-descriptionexploit |
| https://portal.seagullscientific.com/downloads/ba… | product |
| https://www.vulncheck.com/advisories/seagull-soft… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Seagull Software, LLC. | BarTender 2021 |
Affected:
R1 , ≤ 12.0.1
(custom)
|
Date Public
2026-06-03 00:00
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CVE-2026-25550 (GCVE-0-2026-25550)
Vulnerability from cvelistv5 – Published: 2026-06-04 17:13 – Updated: 2026-09-02 16:24
VLAI
EPSS
VEX
Title
Seagull Software BarTender Unauthenticated RCE via .NET Remoting Service
Summary
Seagull Software BarTender 2010, 2016, and 2019 contain an unauthenticated remote code execution vulnerability in the .NET Remoting service exposed on TCP port 7375 via BtSystem.Service.exe. The service registers an unauthenticated singleton endpoint — BarTenderSystem for BarTender 2016 <= R9, and DataServiceSingleton for BarTender 2019 <= R10 — configured with BinaryServerFormatterSinkProvider and TypeFilterLevel set to Full. An unauthenticated remote attacker can exploit .NET Remoting object unmarshalling to read or write arbitrary files on the server using the .NET WebClient class, or coerce NTLMv2 authentication by supplying a UNC path to an attacker-controlled server, enabling sensitive credential disclosure, remote code execution, or lateral movement depending on service account privileges and network environment. The service runs in the context of NT AUTHORITY\\SYSTEM. This vulnerability is corrected in BarTender 12.1. Users of affected releases should upgrade to BarTender 12.1 or later.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-04 17:49 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://trust.seagullsoftware.com/?tcuUid=55ed135… | vendor-advisorypatch |
| https://gist.github.com/VAMorales/dde5b1c0415a850… | technical-descriptionexploit |
| https://portal.seagullscientific.com/downloads/ba… | product |
| https://www.vulncheck.com/advisories/seagull-soft… | third-party-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Seagull Software, LLC. | BarTender 2010 |
Affected:
0 , ≤ 10.1 R4
(custom)
|
|
| Seagull Software, LLC. | BarTender 2016 |
Affected:
0 , ≤ R9
(custom)
|
|
| Seagull Software, LLC. | BarTender 2019 |
Affected:
0 , ≤ R10
(custom)
|
Date Public
2026-06-03 00:00
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CVE-2026-25524 (GCVE-0-2026-25524)
Vulnerability from cvelistv5 – Published: 2026-04-20 16:11 – Updated: 2026-04-20 16:54
VLAI
EPSS
VEX
Title
OpenMage LTS's Phar Deserialization leads to Remote Code Execution
Summary
Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to version 20.17.0, PHP functions such as `getimagesize()`, `file_exists()`, and `is_readable()` can trigger deserialization when processing `phar://` stream wrapper paths. OpenMage LTS uses these functions with potentially controllable file paths during image validation and media handling. An attacker who can upload a malicious phar file (disguised as an image) and trigger one of these functions with a `phar://` path can achieve arbitrary code execution. Version 20.17.0 patches the issue.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-20 16:44 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/OpenMage/magento-lts/security/… | x_refsource_CONFIRM |
| https://github.com/OpenMage/magento-lts/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenMage | magento-lts |
Affected:
< 20.17.0
|
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CVE-2026-25449 (GCVE-0-2026-25449)
Vulnerability from cvelistv5 – Published: 2026-03-18 13:12 – Updated: 2026-04-28 16:14
VLAI
EPSS
VEX
Title
WordPress Traveler theme < 3.2.8.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in shinetheme Traveler traveler allows Object Injection.This issue affects Traveler: from n/a through < 3.2.8.1.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-18 20:03 UTC
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 , ≤ 3.2.8.1
(custom)
|
Date Public
2026-04-01 16:44
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CVE-2026-25445 (GCVE-0-2026-25445)
Vulnerability from cvelistv5 – Published: 2026-03-19 08:37 – Updated: 2026-04-28 16:14
VLAI
EPSS
VEX
Title
WordPress WishList Member X plugin <= 3.29.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Membership Software WishList Member X allows Object Injection.This issue affects WishList Member X: from n/a through 3.29.0.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-19 13:07 UTC
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 | |
|---|---|---|---|
| Membership Software | WishList Member X |
Affected:
n/a , ≤ 3.29.0
(custom)
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CVE-2026-25429 (GCVE-0-2026-25429)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
EPSS
VEX
Title
WordPress Nexa Blocks plugin <= 1.1.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in wpdive Nexa Blocks nexa-blocks allows Object Injection.This issue affects Nexa Blocks: 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 2026-03-26 15:44 UTC
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 | |
|---|---|---|---|
| wpdive | Nexa Blocks |
Affected:
0 , ≤ 1.1.1
(custom)
|
Date Public
2026-04-22 14:18
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CVE-2026-25400 (GCVE-0-2026-25400)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
EPSS
VEX
Title
WordPress Apicona theme <= 24.1.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in thememount Apicona apicona allows Object Injection.This issue affects Apicona: from n/a through <= 24.1.0.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:45 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Theme/a… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| thememount | Apicona |
Affected:
0 , ≤ 24.1.0
(custom)
|
Date Public
2026-04-22 14:18
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CVE-2026-25360 (GCVE-0-2026-25360)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
EPSS
VEX
Title
WordPress Vex theme < 1.2.9 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in rascals Vex vex allows Object Injection.This issue affects Vex: from n/a through < 1.2.9.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:42 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Theme/v… | vdb-entry |
Date Public
2026-04-22 14:18
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CVE-2026-25359 (GCVE-0-2026-25359)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
EPSS
VEX
Title
WordPress Pendulum theme < 3.1.5 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in rascals Pendulum pendulum allows Object Injection.This issue affects Pendulum: from n/a through < 3.1.5.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 15:46 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Theme/p… | vdb-entry |
Date Public
2026-04-22 14:18
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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.