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.

5189 vulnerabilities reference this CWE, most recent first.

CVE-2026-59518 (GCVE-0-2026-59518)

Vulnerability from cvelistv5 – Published: 2026-07-13 08:41 – Updated: 2026-07-13 14:28
VLAI
Title
WordPress Directorist plugin <= 8.8.2 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in wpWax Directorist directorist allows Object Injection.This issue affects Directorist: from n/a through <= 8.8.2.
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 · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 14:28 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
wpWax Directorist Affected: 0 , ≤ 8.8.2 (custom)
Create a notification for this product.
Date Public
2026-07-13 10:37
Credits
dutafi | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-59242 (GCVE-0-2026-59242)

Vulnerability from cvelistv5 – Published: 2026-08-12 15:35 – Updated: 2026-08-12 17:20
VLAI
Title
Apache Airflow: Arbitrary airflow.* class instantiation on the API server via the XCom deserialize endpoint
Summary
Apache Airflow's XCom `GET /api/v2/{...}/xcomEntries/{key}?deserialize=true` endpoint passed a string-literal payload through `BaseXCom.deserialize_value` without the `_check_forbidden_xcom_keys` guard, allowing an authenticated API user with XCom write-and-read access to instantiate arbitrary `airflow.*` classes on the API server (CWE-502). An authenticated user who can write an XCom value and then read it back with `deserialize=true` triggers the unsafe instantiation. Users are advised to upgrade to apache-airflow 3.3.1 or later, which rejects reserved XCom serialization keys submitted as JSON string literals.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 16:41 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Airflow Affected: 0 , < 3.3.1 (semver)
Create a notification for this product.
Credits
localhost-detect (@localhost-detect) Jarek Potiuk
Show details on NVD website
To clipboard 

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CVE-2026-59124 (GCVE-0-2026-59124)

Vulnerability from cvelistv5 – Published: 2026-08-11 17:03 – Updated: 2026-08-31 20:04
VLAI
Title
Microsoft High Performance Computing (HPC) Pack Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft High Performance Computing (HPC) Pack 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 · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 03:56 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft HPC Pack 2019 Affected: 1.0.0 , < 6.3.8359 (custom)
    cpe:2.3:a:microsoft:microsoft_hpc_pack_2019:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-11 14:00
Show details on NVD website
To clipboard 

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CVE-2026-58644 (GCVE-0-2026-58644)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:05 – Updated: 2026-08-31 15:25
VLAI
Title
Microsoft SharePoint Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft Office SharePoint 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:F/RL:O/RC:C
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-16 00:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Date Public
2026-07-14 14:00
Show details on NVD website
To clipboard 

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CVE-2026-58281 (GCVE-0-2026-58281)

Vulnerability from cvelistv5 – Published: 2026-07-11 20:55 – Updated: 2026-08-31 15:29
VLAI
Title
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Severity
8.3 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-10 00:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft Edge (Chromium-based) Affected: 1.0.0.0 , < 150.0.4078.48 (custom)
    cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-07-11 14:00
Show details on NVD website
To clipboard 

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CVE-2026-58233 (GCVE-0-2026-58233)

Vulnerability from cvelistv5 – Published: 2026-07-14 00:21 – Updated: 2026-07-14 12:51
VLAI
Title
Remote Code Execution vulnerability in SAP Change and Transport System Attach Tool (ctsattach)
Summary
SAP Change and Transport System Attach Tool (ctsattach) allows an authenticated attacker to supply a specially crafted archive file which, when processed by the application�s library, can trigger insecure deserialization and lead to remote code execution (RCE) on the system. Successful exploitation requires a victim to process the malicious archive, enabling the attacker to execute the RCE and extract sensitive information and gain control over the system and its processes. This vulnerability has a high impact on confidentiality and integrity of the data, with a low impact on the availability of the system.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 12:50 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-58163 (GCVE-0-2026-58163)

Vulnerability from cvelistv5 – Published: 2026-07-29 08:36 – Updated: 2026-07-29 13:40
VLAI
Title
Apache Traffic Server: Cache deserialization and lifetime errors can corrupt state or crash the server
Summary
Apache Traffic Server mishandles on-disk cache fields and object lifetimes, corrupting state or crashing. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
8.3 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 13:40 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Traffic Server Affected: 8.0.0 , ≤ 8.1.9 (semver)
Affected: 9.0.0 , ≤ 9.2.14 (semver)
Affected: 10.0.0 , ≤ 10.1.3 (semver)
Create a notification for this product.
Credits
Apache Community Omkhar Arasaratnam
Show details on NVD website
To clipboard 

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CVE-2026-58127 (GCVE-0-2026-58127)

Vulnerability from cvelistv5 – Published: 2026-07-01 14:41 – Updated: 2026-07-01 17:25
VLAI
Title
PACSgear MediaWriter 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service
Summary
PACSgear MediaWriter 5.2.1 exposes a .NET Remoting TCP service on port 9000 via PacsgearMediaServerEngine.dll, registered with ObjectURIs RemoteObj and UIRemoteObj, without any authentication requirement. By exploiting the MarshalByRefObject object unmarshalling technique and implementing .NET WebClient class methods, an unauthenticated remote attacker can read and write arbitrary files on the host filesystem. The ObjectURIs are identical across all installations by default. Chaining the arbitrary file write primitive with DLL hijacking opportunities in the MediaWriter service (which runs as NT Authority\\SYSTEM and loads missing DLLs such as CRYPTBASE.DLL from the application directory) enables unauthenticated remote code execution as SYSTEM upon service restart.
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
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 16:15 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Hyland PACSgear MediaWriter Affected: 5.2.1 (semver)
Create a notification for this product.
Date Public
2026-07-01 00:00
Credits
Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp Jan A. Rodriguez, Pentester, GM Sectec, Corp.
Show details on NVD website
To clipboard 

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CVE-2026-58126 (GCVE-0-2026-58126)

Vulnerability from cvelistv5 – Published: 2026-07-01 14:39 – Updated: 2026-07-01 16:06
VLAI
Title
PACSgear PACS Scan 5.2.1 Unauthenticated RCE via .NET Remoting TCP Service
Summary
PACSgear PACS Scan 5.2.1 contains an unauthenticated remote code execution vulnerability that allows remote attackers to read and write arbitrary files by exploiting an exposed .NET Remoting TCP service on port 22222 via PGImageExchQueue.exe without any authentication requirement. Attackers can chain the arbitrary file write primitive with DLL hijacking in PGImageExchangeQueueSvc.exe, which loads missing DLLs such as CRYPTSP.DLL from the application directory, to achieve remote code execution as NT Authority\SYSTEM upon service restart.
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
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 16:05 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Hyland PACSgear PACS Scan Affected: 5.2.1 (semver)
Create a notification for this product.
Date Public
2026-07-01 00:00
Credits
Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp Jan A. Rodriguez, Pentester, GM Sectec, Corp.
Show details on NVD website
To clipboard 

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CVE-2026-58076 (GCVE-0-2026-58076)

Vulnerability from cvelistv5 – Published: 2026-08-12 15:40 – Updated: 2026-08-18 19:53
VLAI
Title
Apache Airflow: Unguarded import_string() of airflow_exc_ser / base_exc_ser exception nodes in BaseSerialization.deserialize enables DAG-author RCE on Scheduler / API Server
Summary
Apache Airflow's serialization layer reconstructed exception nodes by calling `import_string()` on a class name taken from the serialized blob and instantiating it with arguments from the same blob, with no restriction on what could be imported. An operator's `executor_config` reaches that branch, so a Dag author could place a value there that causes an arbitrary callable to be imported and invoked -- for example `subprocess.check_output`, or `builtins.eval` on the `builtins`-prefixed variant. The code runs in the **Scheduler**, which reconstructs serialized Dags in its normal loop with no request involved, and in the **API server**, on any authenticated read of the Dag such as `GET /api/v2/dags/{dag_id}/details`. Both are components the Airflow security model states must never execute Dag-author code, and both hold the metadata database credentials and the JWT signing secret. No non-default configuration is required. This is a **different sink from CVE-2026-33264**, which covered only the trigger branch of the same deserializer: deployments that upgraded in response to that advisory are still affected through the exception branch and must upgrade again. Users are advised to upgrade to apache-airflow 3.3.1 or later, which restricts the imported class to a subclass of `BaseException`.
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 2026-08-18 13:43 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Airflow Affected: 3.0.0 , < 3.3.1 (semver)
Create a notification for this product.
Credits
Jan Kahmen (turingpoint), GitHub: @kah-ja Jarek Potiuk
Show details on NVD website
To clipboard 

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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.

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