Common Weakness Enumeration

CWE-502

Allowed

Deserialization of Untrusted Data

Abstraction: Base · Status: Draft

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

5539 vulnerabilities reference this CWE, most recent first.

CVE-2026-82093 (GCVE-0-2026-82093)

Vulnerability from cvelistv5 – Published: 2026-09-24 14:29 – Updated: 2026-09-24 14:55
VLAI
Title
DataStage on Cloud Pak for Data has several vulnerabilities
Summary
IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary code due to unsafe deserialization of untrusted data.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 14:54 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
References
URL Tags
https://www.ibm.com/support/pages/node/7288649 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM DataStage on Cloud Pak for Data Affected: 5.4.0.0
    cpe:2.3:a:ibm:datastage_on_cloud_pak_for_data:5.4.0.0:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-81867 (GCVE-0-2026-81867)

Vulnerability from cvelistv5 – Published: 2026-09-28 10:49 – Updated: 2026-09-30 13:15
VLAI
Title
Deserialization of Untrusted Data in Application Integration allows Remote Code Execution
Summary
A Deserialization of Untrusted Data vulnerability in the JavaScript Task in Google Cloud Application Integration versions prior to 2026-06-28 on Google Cloud Platform allows an authenticated user with standard permissions to run arbitrary code on the shared production servers using a specially crafted script bypassing param guards. This vulnerability was patched on 28 June 2026, and no customer action is needed.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:13 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Impacted products
Vendor Product Version
Google Cloud Application Integration Affected: 0 , < 2026-06-28 (date)
Create a notification for this product.
Credits
Show details on NVD website

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CVE-2026-81784 (GCVE-0-2026-81784)

Vulnerability from cvelistv5 – Published: 2026-09-10 14:23 – Updated: 2026-10-06 09:27 X_Open Source
VLAI
Title
WordPress Wise Chat plugin <= 3.4.2 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Marcin Wise Chat wise-chat allows Object Injection.This issue affects Wise Chat: from n/a through 3.4.2.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 20:36 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
References
Impacted products
Vendor Product Version
Marcin Wise Chat Affected: 0 , ≤ 3.4.2 (custom)
Create a notification for this product.
Date Public
2026-09-08 11:14
Show details on NVD website

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CVE-2026-81772 (GCVE-0-2026-81772)

Vulnerability from cvelistv5 – Published: 2026-09-02 11:37 – Updated: 2026-09-03 13:50
VLAI
Title
WordPress Ninja Forms - Layout & Styles plugin <= 3.0.31 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Ninja Forms - Layout & Styles <= 3.0.31 versions.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:50 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
References
Impacted products
Vendor Product Version
Saturday Drive Ninja Forms - Layout & Styles Affected: n/a , ≤ 3.0.31 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-81757 (GCVE-0-2026-81757)

Vulnerability from cvelistv5 – Published: 2026-08-28 14:33 – Updated: 2026-08-28 16:03
VLAI
Title
WordPress Rank Math SEO plugin <= 1.0.276 - Remote Code Execution (RCE) vulnerability
Summary
Author Remote Code Execution (RCE) in Rank Math SEO <= 1.0.276 versions.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:03 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
References
Impacted products
Vendor Product Version
Rank Math SEO Rank Math SEO Affected: n/a , ≤ 1.0.276 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-81657 (GCVE-0-2026-81657)

Vulnerability from cvelistv5 – Published: 2026-09-18 19:27 – Updated: 2026-09-23 03:55
VLAI
Title
IBM Guardium Data Protection is affected by multiple vulnerabilities.
Summary
IBM Guardium Data Protection 12.2 could allow a remote unauthenticated attacker to execute arbitrary code on the system due to the deserialization of untrusted data.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 00:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
References
URL Tags
https://www.ibm.com/support/pages/node/7288040 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM Guardium Data Protection Affected: 12.2
    cpe:2.3:a:ibm:guardium_data_protection:12.2:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:guardium_data_protection:12.2.0:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-81385 (GCVE-0-2026-81385)

Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-10-08 18:19
VLAI
Title
Microsoft Office Publisher Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft Office Publisher allows an unauthorized attacker to execute code over a network.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 00:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < 16.0.20326.20138 (custom)
Create a notification for this product.
Microsoft Microsoft Office 2019 Affected: 19.0.0 , < 16.0.10417.20207 (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < 16.0.14334.20906 (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < 16.0.17932.20976 (custom)
Create a notification for this product.
Microsoft Microsoft Publisher 2016 Affected: 16.0.0 , < 16.0.5569.1002 (custom)
Create a notification for this product.
Date Public
2026-09-08 14:00
Show details on NVD website

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CVE-2026-81319 (GCVE-0-2026-81319)

Vulnerability from cvelistv5 – Published: 2026-08-30 18:05 – Updated: 2026-09-01 12:32
VLAI
Title
Unsafe deserialization of decrypted terms enables node DoS in AshCloak
Summary
Deserialization of Untrusted Data vulnerability in ash-project ash_cloak allows an attacker who can influence the bytes of an encrypted column to crash the BEAM node, by triggering unbounded atom creation or a decompression bomb during decryption. AshCloak.Calculations.Decrypt decodes the decrypted binary with Ash.Helpers.non_executable_binary_to_term/1 without the :safe option, so atoms in the payload are interned during the decode and never garbage collected, and the term format's compressed form is inflated transparently. vault.decrypt!() is the only barrier and stops tampering only for an authenticated cipher. Cloak also ships the unauthenticated AES.CTR, whose ciphertext an attacker who knows their own plaintext can XOR into any same-length payload without the key, so an ordinary read of the forged column reaches the decoder. A few hundred kilobytes of distinct atoms exhausts the atom table, or a small compressed payload inflates to gigabytes. This issue affects ash_cloak: from 0.1.0 before 0.4.0.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 12:32 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Impacted products
Vendor Product Version
ash-project ash_cloak Affected: 0.1.0 , < 0.4.0 (semver)
    cpe:2.3:a:ash-project:ash_cloak:*:*:*:*:*:*:*:*
Create a notification for this product.
ash-project ash_cloak Affected: f1595a77fdfa9bfc672f84c2f77feb9e7bf895fc , < 1690f0a436efe3e7c11d70d74ff5a8ac0fdf6608 (git)
    cpe:2.3:a:ash-project:ash_cloak:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-81283 (GCVE-0-2026-81283)

Vulnerability from cvelistv5 – Published: 2026-09-02 11:37 – Updated: 2026-09-02 12:35
VLAI
Title
WordPress WP User Frontend plugin <= 4.3.10 - PHP Object Injection vulnerability
Summary
Subscriber PHP Object Injection in WP User Frontend <= 4.3.10 versions.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 12:35 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
References
Impacted products
Vendor Product Version
weDevs WP User Frontend Affected: n/a , ≤ 4.3.10 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-80428 (GCVE-0-2026-80428)

Vulnerability from cvelistv5 – Published: 2026-08-26 15:44 – Updated: 2026-09-30 16:39
VLAI
Title
ILIAS PHP Object Injection via Shibboleth Logout
Summary
ILIAS before versions 9.22, 10.10, and 11.3 contains an unauthenticated PHP object injection vulnerability that allows unauthenticated attackers to execute arbitrary code by injecting serialized objects through the LTI authentication endpoint and triggering deserialization via the Shibboleth back-channel logout endpoint. Attackers can write arbitrary serialized objects into session storage, then exploit an available POP gadget through the logout endpoint's unrestricted deserialization to write attacker-controlled PHP content to a web-accessible path and achieve remote code execution as the web server user.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-29 02:41 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Impacted products
Vendor Product Version
ILIAS-eLearning e.V. ILIAS Affected: 9.0 , < 9.22 (custom)
Affected: 10.0 , < 10.10 (custom)
Affected: 11.0 , < 11.3 (custom)
    cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
    cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
    cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-26 00:00
Show details on NVD website

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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "NONE",
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            "baseScore": 9.3,
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            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
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            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          ]
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        {
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            "integrityImpact": "HIGH",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "format": "CVSS",
          "scenarios": [
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              "value": "GENERAL"
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      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-502",
              "description": "Deserialization of Untrusted Data",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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          "name": "11.3 Release Notes",
          "tags": [
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          "url": "https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui\u0026cmdNode=wy:ll:6t\u0026cmdClass=ilBlogPostingGUI\u0026cmd=previewFullscreen\u0026ref_id=15821\u0026blpg=936"
        },
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          "url": "https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui\u0026cmdNode=wy:ll:6t\u0026cmdClass=ilBlogPostingGUI\u0026cmd=previewFullscreen\u0026ref_id=15821\u0026blpg=935"
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        },
        {
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          "url": "https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui\u0026cmdNode=wy:ll:6t\u0026cmdClass=ilBlogPostingGUI\u0026cmd=previewFullscreen\u0026ref_id=15821\u0026blpg=934"
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          "url": "https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui\u0026obj_id=225630\u0026ref_id=35"
        },
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          "name": "Researcher Advisory",
          "tags": [
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          ],
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        },
        {
          "name": "Researcher Writeup",
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          "url": "https://schweigertit.de/en/writeups/php-object-injection-shibboleth-logout.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "ILIAS PHP Object Injection via Shibboleth Logout",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-80428",
    "datePublished": "2026-08-26T15:44:55.917Z",
    "dateReserved": "2026-08-26T10:43:44.175Z",
    "dateUpdated": "2026-09-30T16:39:08.178Z",
    "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.