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.

4798 vulnerabilities reference this CWE, most recent first.

CVE-2026-5507 (GCVE-0-2026-5507)

Vulnerability from cvelistv5 – Published: 2026-04-09 22:18 – Updated: 2026-04-14 14:38
VLAI
Title
Session Cache Restore — Arbitrary Free via Deserialized Pointer
Summary
When restoring a session from cache, a pointer from the serialized session data is used in a free operation without validation. An attacker who can poison the session cache could trigger an arbitrary free. Exploitation requires the ability to inject a crafted session into the cache and for the application to call specific session restore APIs.
Severity
4.1 (Medium)
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of untrusted data
Assigner
References
Impacted products
Vendor Product Version
wolfSSL wolfSSL Affected: 0 , ≤ 5.9.0 (semver)
Create a notification for this product.
Credits
Sunwoo Lee (Korea Institute of Energy Technology, KENTECH) Woohyun Choi (Korea Institute of Energy Technology, KENTECH) Seunghyun Yoon (Korea Institute of Energy Technology, KENTECH)
Show details on NVD website
To clipboard 

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CVE-2026-5473 (GCVE-0-2026-5473)

Vulnerability from cvelistv5 – Published: 2026-04-03 16:30 – Updated: 2026-04-06 14:51
VLAI
Title
NASA cFS Pickle pickle.load deserialization
Summary
A vulnerability has been found in NASA cFS up to 7.0.0. The impacted element is the function pickle.load of the component Pickle Module. Such manipulation leads to deserialization. The attack needs to be performed locally. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
2 (Low)
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
4.5 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
4.5 (Medium)
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/355077 vdb-entrytechnical-description
https://vuldb.com/vuln/355077/cti signaturepermissions-required
https://vuldb.com/submit/781949 third-party-advisory
https://github.com/nasa/cFS/issues/951 issue-tracking
https://github.com/nasa/cFS/ product
Impacted products
Vendor Product Version
NASA cFS Affected: 7.0
    cpe:2.3:a:nasa:cfs:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
0rbitingZer0 (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-5426 (GCVE-0-2026-5426)

Vulnerability from cvelistv5 – Published: 2026-04-16 15:18 – Updated: 2026-05-27 14:53
VLAI
Title
KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value
Summary
Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-321 - Use of hard-coded cryptographic key
  • CWE-502 - Deserialization of untrusted data
Assigner
References
Impacted products
Vendor Product Version
Digital Knowledge KnowledgeDeliver Affected: 0 , < 20260224 (date)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-5127 (GCVE-0-2026-5127)

Vulnerability from cvelistv5 – Published: 2026-05-08 08:26 – Updated: 2026-05-08 20:00
VLAI
Title
User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration <= 4.3.1 - Authenticated (Subscriber+) PHP Object Injection
Summary
The User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to Deserialization of Untrusted Data in versions up to, and including, 4.3.1 This is due to insufficient input validation and type checking on the wpuf_files parameter during form submission, combined with unconditional deserialization via maybe_unserialize() when displaying post content. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary PHP objects, which can be leveraged to execute arbitrary code, delete arbitrary files, or perform other malicious actions if a POP chain is present on the target system.
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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Credits
Doan Dinh Van
Show details on NVD website
To clipboard 

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CVE-2026-4860 (GCVE-0-2026-4860)

Vulnerability from cvelistv5 – Published: 2026-03-26 08:18 – Updated: 2026-03-26 18:25
VLAI
Title
648540858 wvp-GB28181-pro API Endpoint RedisTemplateConfig.java GenericFastJsonRedisSerializer deserialization
Summary
A security flaw has been discovered in 648540858 wvp-GB28181-pro up to 2.7.4. This affects the function GenericFastJsonRedisSerializer of the file src/main/java/com/genersoft/iot/vmp/conf/redis/RedisTemplateConfig.java of the component API Endpoint. The manipulation results in deserialization. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/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:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.353191 vdb-entrytechnical-description
https://vuldb.com/?ctiid.353191 signaturepermissions-required
https://vuldb.com/?submit.776213 third-party-advisory
https://github.com/wing3e/public_exp/issues/1 exploitissue-tracking
Impacted products
Vendor Product Version
648540858 wvp-GB28181-pro Affected: 2.7.0
Affected: 2.7.1
Affected: 2.7.2
Affected: 2.7.3
Affected: 2.7.4
Create a notification for this product.
Credits
Winegee (VulDB User) VulDB
Show details on NVD website
To clipboard 

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CVE-2026-4851 (GCVE-0-2026-4851)

Vulnerability from cvelistv5 – Published: 2026-03-29 00:22 – Updated: 2026-04-01 14:17
VLAI
Title
GRID::Machine versions through 0.127 for Perl allows arbitrary code execution via unsafe deserialization
Summary
GRID::Machine versions through 0.127 for Perl allows arbitrary code execution via unsafe deserialization. GRID::Machine provides Remote Procedure Calls (RPC) over SSH for Perl. The client connects to remote hosts to execute code on them. A compromised or malicious remote host can execute arbitrary code back on the client through unsafe deserialization in the RPC protocol. read_operation() in lib/GRID/Machine/Message.pm deserialises values from the remote side using eval() $arg .= '$VAR1'; my $val = eval "no strict; $arg"; # line 40-41 $arg is raw bytes from the protocol pipe. A compromised remote host can embed arbitrary perl in the Dumper-formatted response: $VAR1 = do { system("..."); }; This executes on the client silently on every RPC call, as the return values remain correct. This functionality is by design but the trust requirement for the remote host is not documented in the distribution.
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 (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
  • CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Assigner
References
Impacted products
Vendor Product Version
CASIANO GRID::Machine Affected: 0 , ≤ 0.127 (custom)
Create a notification for this product.
Credits
Pied Crow crow@cpan.org
Show details on NVD website
To clipboard 

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CVE-2026-4735 (GCVE-0-2026-4735)

Vulnerability from cvelistv5 – Published: 2026-03-24 03:08 – Updated: 2026-03-24 14:36
VLAI
Title
A stack overflow and DoS vulnerability in DTStack/chunjun
Summary
Deserialization of Untrusted Data vulnerability in DTStack chunjun (‎chunjun-core/src/main/java/com/dtstack/chunjun/util modules). This vulnerability is associated with program files GsonUtil.Java. This issue affects chunjun: before 1.16.1.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/S:N/AU:Y/R:U/V:C/RE:M/U:Amber
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
DTStack chunjun Affected: 0 , < 1.16.1 (git)
Create a notification for this product.
Credits
TITAN Team (titancaproject@gmail.com)
Show details on NVD website
To clipboard 

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CVE-2026-4538 (GCVE-0-2026-4538)

Vulnerability from cvelistv5 – Published: 2026-03-22 04:20 – Updated: 2026-03-23 16:21
VLAI
Title
PyTorch pt2 Loading deserialization
Summary
A vulnerability was identified in PyTorch 2.10.0. The affected element is an unknown function of the component pt2 Loading Handler. The manipulation leads to deserialization. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The project was informed of the problem early through a pull request but has not reacted yet.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.3 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a PyTorch Affected: 2.10.0
Credits
ez-lbz (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-4416 (GCVE-0-2026-4416)

Vulnerability from cvelistv5 – Published: 2026-03-30 07:52 – Updated: 2026-03-30 15:08
VLAI
Title
GIGABYTE｜Performance Library - Insecure Deserialization
Summary
The Performance Library component of Gigabyte Control Center has an Insecure Deserialization vulnerability. Authenticated local attackers can send a malicious serialized payload to the EasyTune Engine service, resulting in privilege escalation.
Severity
8.5 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of untrusted data
Assigner
References
Impacted products
Vendor Product Version
GIGABYTE Performance Library Affected: 0 , < 25.12.31.01 (custom)
Create a notification for this product.
Date Public
2026-03-30 07:47
Show details on NVD website
To clipboard 

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CVE-2026-4266 (GCVE-0-2026-4266)

Vulnerability from cvelistv5 – Published: 2026-03-30 12:38 – Updated: 2026-03-31 03:55
VLAI
Title
WatchGuard Firebox Insecure Deserialization in Fireware Access Portal
Summary
An Insecure Deserialization vulnerability in WatchGuard Fireware OS allows an attacker that has obtained write access to the local filesystem through another vulnerability to execute arbitrary code in the context of the portald user.This issue affects Fireware OS: 12.1 through 12.11.8 and 2025.1 through 2026.1.2. Note, this vulnerability does not affect Firebox platforms that do not support the Access Portal feature, including the T-15 and T-35.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
WatchGuard Fireware OS Affected: 12.1 , ≤ 12.11.8 (semver)
Affected: 2025.1 , ≤ 2026.1.2 (semver)
Create a notification for this product.
Credits
btaol
Show details on NVD website
To clipboard 

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            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-502",
              "description": "CWE-502 Deserialization of Untrusted Data",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-30T12:38:01.593Z",
        "orgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
        "shortName": "WatchGuard"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00007"
        }
      ],
      "source": {
        "advisory": "WGSA-2026-00007",
        "defect": [
          "FBX-31284"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "WatchGuard Firebox Insecure Deserialization in Fireware Access Portal",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
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  "cveMetadata": {
    "assignerOrgId": "5d1c2695-1a31-4499-88ae-e847036fd7e3",
    "assignerShortName": "WatchGuard",
    "cveId": "CVE-2026-4266",
    "datePublished": "2026-03-30T12:38:01.593Z",
    "dateReserved": "2026-03-16T12:50:10.806Z",
    "dateUpdated": "2026-03-31T03:55:35.825Z",
    "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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