CWE-502
AllowedDeserialization of Untrusted Data
Abstraction: Base · Status: Draft
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
4797 vulnerabilities reference this CWE, most recent first.
GHSA-5FX4-XH92-6XQM
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-17 18:35Contributor PHP Object Injection in Avada <= 3.15.3 versions.
{
"affected": [],
"aliases": [
"CVE-2026-12256"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T13:19:57Z",
"severity": "HIGH"
},
"details": "Contributor PHP Object Injection in Avada \u003c= 3.15.3 versions.",
"id": "GHSA-5fx4-xh92-6xqm",
"modified": "2026-06-17T18:35:45Z",
"published": "2026-06-17T18:35:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12256"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/avada/vulnerability/wordpress-avada-theme-3-15-3-php-object-injection-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5G29-3F8W-5892
Vulnerability from github – Published: 2025-07-07 15:30 – Updated: 2025-07-07 15:30Mescius ActiveReports.NET ReadValue Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Mescius ActiveReports.NET. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.
The specific flaw exists within the implementation of the ReadValue method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25246.
{
"affected": [],
"aliases": [
"CVE-2025-6810"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-07T15:15:32Z",
"severity": "CRITICAL"
},
"details": "Mescius ActiveReports.NET ReadValue Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Mescius ActiveReports.NET. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.\n\nThe specific flaw exists within the implementation of the ReadValue method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25246.",
"id": "GHSA-5g29-3f8w-5892",
"modified": "2025-07-07T15:30:41Z",
"published": "2025-07-07T15:30:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6810"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-448"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5G3F-J849-RM6P
Vulnerability from github – Published: 2022-10-08 00:00 – Updated: 2022-10-11 19:00The vCenter Server contains an unsafe deserialisation vulnerability in the PSC (Platform services controller). A malicious actor with admin access on vCenter server may exploit this issue to execute arbitrary code on the underlying operating system that hosts the vCenter Server.
{
"affected": [],
"aliases": [
"CVE-2022-31680"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-07T21:15:00Z",
"severity": "CRITICAL"
},
"details": "The vCenter Server contains an unsafe deserialisation vulnerability in the PSC (Platform services controller). A malicious actor with admin access on vCenter server may exploit this issue to execute arbitrary code on the underlying operating system that hosts the vCenter Server.",
"id": "GHSA-5g3f-j849-rm6p",
"modified": "2022-10-11T19:00:55Z",
"published": "2022-10-08T00:00:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-31680"
},
{
"type": "WEB",
"url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1587"
},
{
"type": "WEB",
"url": "https://www.vmware.com/security/advisories/VMSA-2022-0025.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5G96-PC88-J7FX
Vulnerability from github – Published: 2025-10-18 06:30 – Updated: 2025-10-18 06:30The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to PHP Object Injection in all versions up to 3.7.9.3 (exclusive) via deserialization of untrusted input from the is_expired_by_date() function. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to fetch a remote file and install it on the site.
{
"affected": [],
"aliases": [
"CVE-2017-20208"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-18T04:15:59Z",
"severity": "CRITICAL"
},
"details": "The RegistrationMagic \u2013 Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to PHP Object Injection in all versions up to 3.7.9.3 (exclusive) via deserialization of untrusted input from the is_expired_by_date() function. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to fetch a remote file and install it on the site.",
"id": "GHSA-5g96-pc88-j7fx",
"modified": "2025-10-18T06:30:25Z",
"published": "2025-10-18T06:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-20208"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset/1733274/custom-registration-form-builder-with-submission-manager"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/blog/2017/10/3-zero-day-plugin-vulnerabilities-exploited-wild"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c2b79193-f8fc-4ea2-8973-fe292cfb926b?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5GJ3-GGCF-X4J5
Vulnerability from github – Published: 2025-02-22 06:30 – Updated: 2025-02-22 06:30The Mambo Importer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0 via deserialization of untrusted input via the $data parameter in the fImportMenu function. This makes it possible for authenticated attackers, with Administrator-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.
{
"affected": [],
"aliases": [
"CVE-2024-13899"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-22T04:15:09Z",
"severity": "HIGH"
},
"details": "The Mambo Importer plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0 via deserialization of untrusted input via the $data parameter in the fImportMenu function. This makes it possible for authenticated attackers, with Administrator-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.",
"id": "GHSA-5gj3-ggcf-x4j5",
"modified": "2025-02-22T06:30:33Z",
"published": "2025-02-22T06:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-13899"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/mambo-joomla-importer/trunk/mamboImporter.php#L45"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b6d448c2-5acc-47f8-8e86-9ef10fa01513?source=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5GQ3-MH83-6M28
Vulnerability from github – Published: 2026-01-28 09:30 – Updated: 2026-02-26 21:31SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.
{
"affected": [],
"aliases": [
"CVE-2025-40553"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-28T08:16:02Z",
"severity": "CRITICAL"
},
"details": "SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.",
"id": "GHSA-5gq3-mh83-6m28",
"modified": "2026-02-26T21:31:27Z",
"published": "2026-01-28T09:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40553"
},
{
"type": "WEB",
"url": "https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm"
},
{
"type": "WEB",
"url": "https://github.com/watchtowrlabs/watchTowr-vs-SolarWinds-WebHelpDesk-CVE-2025-40552-CVE-2025-40553/blob/main/watchTowr-vs-SolarWinds-WebHelpDesk-CVE-2025-40552-CVE-2025-40553.py"
},
{
"type": "WEB",
"url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40553"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5GQC-WQM6-M85X
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-17 18:35Unauthenticated PHP Object Injection in Moderno < 1.43 versions.
{
"affected": [],
"aliases": [
"CVE-2026-49108"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T14:17:56Z",
"severity": "CRITICAL"
},
"details": "Unauthenticated PHP Object Injection in Moderno \u003c 1.43 versions.",
"id": "GHSA-5gqc-wqm6-m85x",
"modified": "2026-06-17T18:35:55Z",
"published": "2026-06-17T18:35:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49108"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/moderno/vulnerability/wordpress-moderno-theme-1-43-php-object-injection-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5GQF-2MWX-X4QQ
Vulnerability from github – Published: 2024-11-22 21:32 – Updated: 2024-11-22 21:32Allegra renderFieldMatch Deserialization of Unstrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to exploit this vulnerability, product implements a registration mechanism that can be used to create a user with a sufficient privilege level.
The specific flaw exists within the renderFieldMatch method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of LOCAL SERVICE. Was ZDI-CAN-22505.
{
"affected": [],
"aliases": [
"CVE-2023-51641"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-22T20:15:06Z",
"severity": "CRITICAL"
},
"details": "Allegra renderFieldMatch Deserialization of Unstrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Allegra. Although authentication is required to exploit this vulnerability, product implements a registration mechanism that can be used to create a user with a sufficient privilege level.\n\nThe specific flaw exists within the renderFieldMatch method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of LOCAL SERVICE. Was ZDI-CAN-22505.",
"id": "GHSA-5gqf-2mwx-x4qq",
"modified": "2024-11-22T21:32:16Z",
"published": "2024-11-22T21:32:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51641"
},
{
"type": "WEB",
"url": "https://www.trackplus.com/en/service/release-notes-reader/7-5-1-release-notes-2.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-106"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5GR8-8QHC-45JJ
Vulnerability from github – Published: 2022-10-31 19:00 – Updated: 2022-11-01 19:00The Customizer Export/Import WordPress plugin before 0.9.5 unserializes the content of an imported file, which could lead to PHP object injection issues when an admin imports (intentionally or not) a malicious file and a suitable gadget chain is present on the blog.
{
"affected": [],
"aliases": [
"CVE-2022-3380"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-31T16:15:00Z",
"severity": "HIGH"
},
"details": "The Customizer Export/Import WordPress plugin before 0.9.5 unserializes the content of an imported file, which could lead to PHP object injection issues when an admin imports (intentionally or not) a malicious file and a suitable gadget chain is present on the blog.",
"id": "GHSA-5gr8-8qhc-45jj",
"modified": "2022-11-01T19:00:30Z",
"published": "2022-10-31T19:00:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3380"
},
{
"type": "WEB",
"url": "https://wpscan.com/vulnerability/a42272a2-f9ce-4aab-9a94-8a4d85008746"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-5GWJ-M78Q-7PQ3
Vulnerability from github – Published: 2026-07-03 21:31 – Updated: 2026-07-03 21:31A vulnerability in keras-team/keras version 3.14.0 allows for arbitrary code execution due to improper handling of deserialization in the Lambda layer. Specifically, the _raise_for_lambda_deserialization() function fails to enforce the safe-mode guard when safe_mode is set to None, which is the default value when from_config() is called outside of a SafeModeScope context. This logic error conflates None (unset/default-deny) with False (explicitly disabled), bypassing the guard and allowing attacker-controlled marshal bytecode to be deserialized. Affected call sites include keras.layers.deserialize(config), keras.models.clone_model(model), and any direct invocation of Lambda.from_config(config) without an enclosing SafeModeScope(True). This vulnerability can be exploited to achieve arbitrary OS-level code execution in the context of the server or user process.
{
"affected": [],
"aliases": [
"CVE-2026-12481"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-03T21:16:54Z",
"severity": "HIGH"
},
"details": "A vulnerability in keras-team/keras version 3.14.0 allows for arbitrary code execution due to improper handling of deserialization in the `Lambda` layer. Specifically, the `_raise_for_lambda_deserialization()` function fails to enforce the safe-mode guard when `safe_mode` is set to `None`, which is the default value when `from_config()` is called outside of a `SafeModeScope` context. This logic error conflates `None` (unset/default-deny) with `False` (explicitly disabled), bypassing the guard and allowing attacker-controlled `marshal` bytecode to be deserialized. Affected call sites include `keras.layers.deserialize(config)`, `keras.models.clone_model(model)`, and any direct invocation of `Lambda.from_config(config)` without an enclosing `SafeModeScope(True)`. This vulnerability can be exploited to achieve arbitrary OS-level code execution in the context of the server or user process.",
"id": "GHSA-5gwj-m78q-7pq3",
"modified": "2026-07-03T21:31:36Z",
"published": "2026-07-03T21:31:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12481"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/59ceaed1-c8a3-4135-8f94-169ade02823d"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
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
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
Explicitly define a final object() to prevent deserialization.
Mitigation
- 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
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
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
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.