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.

4794 vulnerabilities reference this CWE, most recent first.

CVE-2026-56304 (GCVE-0-2026-56304)

Vulnerability from cvelistv5 – Published: 2026-06-20 15:24 – Updated: 2026-06-24 17:58
VLAI
Title
picklescan - Arbitrary File Creation via logging.FileHandler Deserialization
Summary
picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte files via logging.FileHandler class instantiation. Attackers can exploit this by crafting malicious pickle payloads to bypass RCE blocklists and create lock files or other filesystem artifacts, potentially causing denial of service or application disruption.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
picklescan picklescan Affected: 0 , < 1.0.1 (semver)
Unaffected: 1.0.1 (semver)
Create a notification for this product.
Date Public
2026-02-02 00:00
Credits
ez-lbz
Show details on NVD website
To clipboard 

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CVE-2026-56121 (GCVE-0-2026-56121)

Vulnerability from cvelistv5 – Published: 2026-06-24 14:49 – Updated: 2026-07-15 00:42 X_Open Source
VLAI
Title
Feast < 0.63.0 Unauthenticated RCE via ApplyFeatureView gRPC Deserialization
Summary
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Severity
9.3 (Critical)
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
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
feast-dev feast Affected: 0 , < 0.63.0 (semver)
Create a notification for this product.
Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
 Create a notification for this product.
Date Public
2026-02-21 00:00
Credits
Tanguy Snoeck
Show details on NVD website
To clipboard 

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CVE-2026-56057 (GCVE-0-2026-56057)

Vulnerability from cvelistv5 – Published: 2026-06-26 14:52 – Updated: 2026-06-26 16:48
VLAI
Title
WordPress Uncanny Automator Pro plugin <= 7.3.0.6 - PHP Object Injection vulnerability
Summary
Subscriber PHP Object Injection in Uncanny Automator Pro <= 7.3.0.6 versions.
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
Assigner
References
Impacted products
Vendor Product Version
Uncanny Owl Uncanny Automator Pro Affected: n/a , ≤ 7.3.0.6 (custom)
Create a notification for this product.
Credits
VanTastic | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-56055 (GCVE-0-2026-56055)

Vulnerability from cvelistv5 – Published: 2026-06-26 14:52 – Updated: 2026-06-26 20:17
VLAI
Title
WordPress RealHomes theme <= 4.5.3 - PHP Object Injection vulnerability
Summary
Subscriber PHP Object Injection in RealHomes <= 4.5.3 versions.
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: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
InspiryThemes RealHomes Affected: n/a , ≤ 4.5.3 (custom)
Create a notification for this product.
Credits
daroo | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-56053 (GCVE-0-2026-56053)

Vulnerability from cvelistv5 – Published: 2026-06-25 13:12 – Updated: 2026-06-25 23:23
VLAI
Title
WordPress EventPrime plugin <= 4.3.4.1 - PHP Object Injection vulnerability
Summary
Subscriber PHP Object Injection in EventPrime <= 4.3.4.1 versions.
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
Vendor Product Version
EventPrime EventPrime Affected: n/a , ≤ 4.3.4.1 (custom)
Create a notification for this product.
Credits
VanTastic | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-56037 (GCVE-0-2026-56037)

Vulnerability from cvelistv5 – Published: 2026-07-02 11:30 – Updated: 2026-07-02 15:52 X_Open Source
VLAI
Title
WordPress Themify Popup plugin <= 1.4.3 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Themify Themify Popup allows Object Injection. This issue affects Themify Popup: from n/a through 1.4.3.
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
Vendor Product Version
Themify Themify Popup Affected: n/a , ≤ 1.4.3 (custom)
Create a notification for this product.
Credits
0xd4rk5id3 | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-56032 (GCVE-0-2026-56032)

Vulnerability from cvelistv5 – Published: 2026-06-26 14:52 – Updated: 2026-06-26 15:34
VLAI
Title
WordPress Buddyboss Platform plugin <= 3.0.4 - PHP Object Injection vulnerability
Summary
Subscriber PHP Object Injection in Buddyboss Platform <= 3.0.4 versions.
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
Assigner
References
Impacted products
Vendor Product Version
BuddyBoss Buddyboss Platform Affected: n/a , ≤ 3.0.4 (custom)
Create a notification for this product.
Credits
dutafi | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-56031 (GCVE-0-2026-56031)

Vulnerability from cvelistv5 – Published: 2026-06-26 14:52 – Updated: 2026-06-26 17:43
VLAI
Title
WordPress Uncanny Automator plugin <= 7.3.1.2 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Uncanny Automator <= 7.3.1.2 versions.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/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
Uncanny Owl Uncanny Automator Affected: n/a , ≤ 7.3.1.2 (custom)
Create a notification for this product.
Credits
VanTastic | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-55944 (GCVE-0-2026-55944)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:09 – Updated: 2026-07-15 18:35
VLAI
Title
Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft Dynamics NAV 2018 Affected: 1.0 , < 11.0.50704.0 (custom)
Create a notification for this product.
Date Public
2026-07-14 14:00
Show details on NVD website
To clipboard 

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CVE-2026-55223 (GCVE-0-2026-55223)

Vulnerability from cvelistv5 – Published: 2026-06-30 22:56 – Updated: 2026-07-01 13:38
VLAI
Title
c3p0 exposes a deserialization "sink" via JDBC DataSource bean properties
Summary
c3p0 is a JDBC Connection pooling library. In versions prior to 0.14.0, c3p0 in combination with other libraries, can compose to a "sink" for deserialization gadgets. The JDBC spec's DataSource.getConnection() and ConnectionPoolDataSource.getPooledConnection() match the getXXX() form, so JavaBean libraries treat them as "properties" assumed safe while they actually call into JDBC drivers. Attackers can thus craft malicious DataSource objects whose property lookups invoke vulnerable drivers, then smuggle them in serialized form to where an application deserializes and auto-resolves bean properties — triggering the attack. This requires a susceptible DataSource/ConnectionPoolDataSource and JDBC driver on the CLASSPATH, plus a carrier that auto-looks-up JavaBean properties on = deserialization, most commonly a collection paired with an Apache commons-beanutils Comparator that sorts by bean properties. c3p0 supplied that susceptible DataSource/ConnectionPoolDataSource, which was an essential component of the trigger. This issue has been fixed in version 0.14.0.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
Assigner
References
Impacted products
Vendor Product Version
swaldman c3p0 Affected: < 0.14.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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            "x_refsource_CONFIRM"
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          "url": "https://github.com/swaldman/c3p0/security/advisories/GHSA-w6w4-rjh9-9r58"
        },
        {
          "name": "https://github.com/swaldman/c3p0/commit/7b022c4b6694dabc6204254dc917af9c38f2cb27",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/swaldman/c3p0/commit/7b022c4b6694dabc6204254dc917af9c38f2cb27"
        }
      ],
      "source": {
        "advisory": "GHSA-w6w4-rjh9-9r58",
        "discovery": "UNKNOWN"
      },
      "title": "c3p0 exposes a deserialization \"sink\" via JDBC DataSource bean properties"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55223",
    "datePublished": "2026-06-30T22:56:55.895Z",
    "dateReserved": "2026-06-16T16:16:32.628Z",
    "dateUpdated": "2026-07-01T13:38:12.928Z",
    "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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