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.

5669 vulnerabilities reference this CWE, most recent first.

CVE-2026-0677 (GCVE-0-2026-0677)

Vulnerability from cvelistv5 – Published: 2026-03-20 09:31 – Updated: 2026-06-10 19:23
VLAI
Title
WordPress TotalContest Lite plugin <= 2.9.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in TotalSuite TotalContest Lite totalcontest-lite allows Object Injection.This issue affects TotalContest Lite: from n/a through <= 2.9.1.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-20 11:48 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
TotalSuite TotalContest Lite Affected: 0 , ≤ 2.9.1 (custom)
Create a notification for this product.
Date Public
2026-04-01 16:44
Credits
hhhai | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-0551 (GCVE-0-2026-0551)

Vulnerability from cvelistv5 – Published: 2026-08-22 23:27 – Updated: 2026-08-25 19:24
VLAI
Title
PPWP – Password Protect Pages <= 1.9.18 - Authenticated (Contributor+) PHP Object Injection via post_protection_roles
Summary
The PPWP – Password Protect Pages plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.9.18 via deserialization of untrusted input from the 'post_protection_roles' vulnerable parameter. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.
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 2026-08-25 19:09 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
buildwps PPWP – Password Protect Pages Affected: 0 , ≤ 1.9.18 (semver)
Create a notification for this product.
Credits
Webbernaut
Show details on NVD website
To clipboard 

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CVE-2025-71378 (GCVE-0-2025-71378)

Vulnerability from cvelistv5 – Published: 2026-06-21 13:26 – Updated: 2026-06-23 02:46
VLAI
Title
picklescan - Remote Code Execution via Undetected cProfile.runctx in Pickle Files
Summary
picklescan before 0.0.30 fails to detect cProfile.runctx function calls in pickle file reduce methods, allowing attackers to execute arbitrary code. Malicious pickle files bypass picklescan detection and execute remote code when loaded via pickle.load().
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 02:45 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 0.0.30 (semver)
Unaffected: 0.0.30 (semver)
    cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2025-08-26 00:00
Credits
FredericDT
Show details on NVD website
To clipboard 

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CVE-2025-71376 (GCVE-0-2025-71376)

Vulnerability from cvelistv5 – Published: 2026-06-23 12:12 – Updated: 2026-06-23 15:05
VLAI
Title
picklescan - Arbitrary Code Execution via Undetected idlelib.autocomplete.AutoComplete.fetch_completions
Summary
picklescan before 0.0.29 fails to detect malicious pickle files using idlelib.autocomplete.AutoComplete.fetch_completions in reduce methods. Attackers can embed undetected code in pickle files that executes arbitrary commands when loaded by victims.
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 14:59 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 0.0.29 (semver)
Unaffected: 0.0.29 (semver)
    cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2025-08-26 00:00
Credits
FredericDT
Show details on NVD website
To clipboard 

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CVE-2025-71375 (GCVE-0-2025-71375)

Vulnerability from cvelistv5 – Published: 2026-07-04 01:23 – Updated: 2026-07-07 16:58
VLAI
Title
picklescan - Undetected Remote Code Execution via _operator.methodcaller
Summary
picklescan before 0.0.34 fails to detect the _operator.methodcaller built-in function when scanning pickle files for malicious code. Attackers can craft malicious pickle payloads using _operator.methodcaller that evade detection and execute arbitrary code when loaded by pickle.load().
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-07 16:41 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 0.0.34 (semver)
Unaffected: 0.0.34 (semver)
    cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2025-12-27 00:00
Credits
CoolwindHF
Show details on NVD website
To clipboard 

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CVE-2025-71374 (GCVE-0-2025-71374)

Vulnerability from cvelistv5 – Published: 2026-06-30 22:08 – Updated: 2026-07-01 13:56
VLAI
Title
picklescan - Arbitrary Code Execution via Undetected profile.Profile.run
Summary
picklescan before 0.0.29 fails to detect the built-in python profile.Profile.run function when used in pickle reduce methods, allowing attackers to execute arbitrary code. Remote attackers can craft malicious pickle files that bypass picklescan detection and achieve code execution upon deserialization.
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 13:56 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 0.0.29 (semver)
Unaffected: 0.0.29 (semver)
    cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2025-08-26 00:00
Credits
FredericDT
Show details on NVD website
To clipboard 

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CVE-2025-71372 (GCVE-0-2025-71372)

Vulnerability from cvelistv5 – Published: 2026-07-04 01:23 – Updated: 2026-07-07 02:27
VLAI
Title
Picklescan - Arbitrary Code Execution via numpy.f2py.crackfortran.getlincoef Gadget
Summary
Picklescan before 0.0.33 fails to detect the numpy.f2py.crackfortran.getlincoef gadget in pickle __reduce__ methods, allowing arbitrary code execution. Attackers can craft malicious pickle files that execute arbitrary Python code when loaded, bypassing Picklescan's safety checks and enabling supply-chain poisoning of shared model files.
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-07 02:26 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Picklescan Picklescan Affected: 0 , < 0.0.33 (semver)
Unaffected: 0.0.33 (semver)
    cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2025-12-27 00:00
Credits
ac0d3r Lyutoon
Show details on NVD website
To clipboard 

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CVE-2025-71371 (GCVE-0-2025-71371)

Vulnerability from cvelistv5 – Published: 2026-06-30 22:08 – Updated: 2026-07-01 14:07
VLAI
Title
picklescan - Remote Code Execution via code.InteractiveInterpreter Detection Bypass
Summary
picklescan before 0.0.29 fails to detect malicious pickle files using code.InteractiveInterpreter.runcode in reduce methods. Attackers can craft pickle payloads that bypass picklescan detection and execute arbitrary code when loaded via pickle.load().
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 14:07 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 0.0.29 (semver)
Unaffected: 0.0.29 (semver)
    cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2025-08-26 00:00
Credits
FredericDT
Show details on NVD website
To clipboard 

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CVE-2025-71370 (GCVE-0-2025-71370)

Vulnerability from cvelistv5 – Published: 2026-06-23 12:12 – Updated: 2026-06-23 13:37
VLAI
Title
picklescan - Remote Code Execution via torch.jit.unsupported_tensor_ops.execWrapper
Summary
picklescan before 0.0.28 fails to detect malicious torch.jit.unsupported_tensor_ops.execWrapper function calls embedded in pickle files. Attackers can craft malicious pickle files that bypass picklescan detection and execute arbitrary code when loaded via pickle.load().
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 13:37 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 0.0.28 (semver)
Unaffected: 0.0.28 (semver)
    cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2025-08-22 00:00
Credits
FredericDT
Show details on NVD website
To clipboard 

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CVE-2025-71369 (GCVE-0-2025-71369)

Vulnerability from cvelistv5 – Published: 2026-07-04 01:23 – Updated: 2026-07-06 16:26
VLAI
Title
picklescan - Unsafe Deserialization via torch.utils.data.datapipes.utils.decoder.basichandlers
Summary
picklescan before 0.0.28 fails to detect malicious pickle files that use torch.utils.data.datapipes.utils.decoder.basichandlers in reduce methods, allowing attackers to bypass safety checks. Remote attackers can embed undetected malicious code in pickle files that executes during deserialization, enabling remote code execution.
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-06 16:26 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 0.0.28 (semver)
Unaffected: 0.0.28 (semver)
    cpe:2.3:a:mmaitre314:picklescan:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2025-08-22 00:00
Credits
FredericDT
Show details on NVD website
To clipboard 

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        "dateUpdated": "2026-07-04T01:23:40.021Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-h3qp-7fh3-f8h4)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/mmaitre314/picklescan/security/advisories/GHSA-h3qp-7fh3-f8h4"
        },
        {
          "name": "VulnCheck Advisory: picklescan - Unsafe Deserialization via torch.utils.data.datapipes.utils.decoder.basichandlers",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/picklescan-unsafe-deserialization-via-torch-utils-data-datapipes-utils-decoder-basichandlers"
        }
      ],
      "title": "picklescan - Unsafe Deserialization via torch.utils.data.datapipes.utils.decoder.basichandlers",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2025-71369",
    "datePublished": "2026-07-04T01:23:40.021Z",
    "dateReserved": "2026-06-20T13:01:42.505Z",
    "dateUpdated": "2026-07-06T16:26:52.279Z",
    "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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