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.
4815 vulnerabilities reference this CWE, most recent first.
GHSA-P95X-PV3H-FH38
Vulnerability from github – Published: 2022-05-17 00:25 – Updated: 2022-05-17 00:25The Qpid server on Red Hat Satellite 6 does not properly restrict message types, which allows remote authenticated users with administrative access on a managed content host to execute arbitrary code via a crafted message, related to a pickle processing problem in pulp.
{
"affected": [],
"aliases": [
"CVE-2015-5164"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-10-18T16:29:00Z",
"severity": "HIGH"
},
"details": "The Qpid server on Red Hat Satellite 6 does not properly restrict message types, which allows remote authenticated users with administrative access on a managed content host to execute arbitrary code via a crafted message, related to a pickle processing problem in pulp.",
"id": "GHSA-p95x-pv3h-fh38",
"modified": "2022-05-17T00:25:39Z",
"published": "2022-05-17T00:25:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-5164"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1247732"
},
{
"type": "WEB",
"url": "https://pulp.plan.io/issues/23"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-P97H-V2QF-9878
Vulnerability from github – Published: 2025-05-23 15:31 – Updated: 2026-04-01 18:35Deserialization of Untrusted Data vulnerability in GoodLayers Goodlayers Hostel allows Object Injection. This issue affects Goodlayers Hostel: from n/a through 3.1.2.
{
"affected": [],
"aliases": [
"CVE-2025-39500"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-23T13:15:31Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in GoodLayers Goodlayers Hostel allows Object Injection. This issue affects Goodlayers Hostel: from n/a through 3.1.2.",
"id": "GHSA-p97h-v2qf-9878",
"modified": "2026-04-01T18:35:14Z",
"published": "2025-05-23T15:31:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39500"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/gdlr-hostel/vulnerability/wordpress-goodlayers-hostel-plugin-3-1-2-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-P9QH-H9CJ-HC7V
Vulnerability from github – Published: 2026-03-25 18:31 – Updated: 2026-03-26 18:31Deserialization of Untrusted Data vulnerability in wpdive Nexa Blocks nexa-blocks allows Object Injection.This issue affects Nexa Blocks: from n/a through <= 1.1.1.
{
"affected": [],
"aliases": [
"CVE-2026-25429"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-25T17:16:50Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in wpdive Nexa Blocks nexa-blocks allows Object Injection.This issue affects Nexa Blocks: from n/a through \u003c= 1.1.1.",
"id": "GHSA-p9qh-h9cj-hc7v",
"modified": "2026-03-26T18:31:34Z",
"published": "2026-03-25T18:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25429"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Plugin/nexa-blocks/vulnerability/wordpress-nexa-blocks-plugin-1-1-1-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-P9R8-4CWF-V3W6
Vulnerability from github – Published: 2024-10-20 09:30 – Updated: 2026-04-01 18:32Deserialization of Untrusted Data vulnerability in Smartdevth Advanced Advertising System allows Object Injection.This issue affects Advanced Advertising System: from n/a through 1.3.1.
{
"affected": [],
"aliases": [
"CVE-2024-49624"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-20T09:15:07Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in Smartdevth Advanced Advertising System allows Object Injection.This issue affects Advanced Advertising System: from n/a through 1.3.1.",
"id": "GHSA-p9r8-4cwf-v3w6",
"modified": "2026-04-01T18:32:07Z",
"published": "2024-10-20T09:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49624"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Plugin/advanced-advertising-system/vulnerability/wordpress-advanced-advertising-system-plugin-1-3-1-php-object-injection-vulnerability?_s_id=cve"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/vulnerability/advanced-advertising-system/wordpress-advanced-advertising-system-plugin-1-3-1-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-P9RC-M4R5-4RPR
Vulnerability from github – Published: 2024-11-14 18:30 – Updated: 2025-10-01 21:30A deserialization issue in Kibana can lead to arbitrary code execution when Kibana attempts to parse a YAML document containing a crafted payload. A successful attack requires a malicious user to have a combination of both specific Elasticsearch indices privileges https://www.elastic.co/guide/en/elasticsearch/reference/current/defining-roles.html#roles-indices-priv and Kibana privileges https://www.elastic.co/guide/en/fleet/current/fleet-roles-and-privileges.html assigned to them.
The following Elasticsearch indices permissions are required
- write privilege on the system indices .kibana_ingest*
- The allow_restricted_indices flag is set to true
Any of the following Kibana privileges are additionally required
- Under Fleet the All privilege is granted
- Under Integration the Read or All privilege is granted
- Access to the fleet-setup privilege is gained through the Fleet Server’s service account token
{
"affected": [],
"aliases": [
"CVE-2024-37285"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-14T17:15:06Z",
"severity": "CRITICAL"
},
"details": "A deserialization issue in Kibana can lead to arbitrary code execution when Kibana attempts to parse a YAML document containing a crafted payload. A successful attack requires a malicious user to have a combination of both specific Elasticsearch indices privileges https://www.elastic.co/guide/en/elasticsearch/reference/current/defining-roles.html#roles-indices-priv \u00a0and Kibana privileges https://www.elastic.co/guide/en/fleet/current/fleet-roles-and-privileges.html \u00a0assigned to them.\n\n\n\nThe following Elasticsearch indices permissions are required\n\n * write\u00a0privilege on the system indices .kibana_ingest*\n * The allow_restricted_indices\u00a0flag is set to true\n\n\nAny of the following Kibana privileges are additionally required\n\n * Under Fleet\u00a0the All\u00a0privilege is granted\n * Under Integration\u00a0the Read\u00a0or All\u00a0privilege is granted\n * Access to the fleet-setup\u00a0privilege is gained through the Fleet Server\u2019s service account token",
"id": "GHSA-p9rc-m4r5-4rpr",
"modified": "2025-10-01T21:30:34Z",
"published": "2024-11-14T18:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37285"
},
{
"type": "WEB",
"url": "https://discuss.elastic.co/t/kibana-8-15-1-security-update-esa-2024-27-esa-2024-28/366119"
}
],
"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-P9VX-HJR4-HVX2
Vulnerability from github – Published: 2022-05-13 01:18 – Updated: 2022-05-13 01:18ValidFormBuilder version 4.5.4 contains a PHP Object Injection vulnerability in Valid Form unserialize method that can result in Possible to execute unauthorised system commands remotely and disclose file contents in file system.
{
"affected": [],
"aliases": [
"CVE-2018-1000059"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-02-09T23:29:00Z",
"severity": "CRITICAL"
},
"details": "ValidFormBuilder version 4.5.4 contains a PHP Object Injection vulnerability in Valid Form unserialize method that can result in Possible to execute unauthorised system commands remotely and disclose file contents in file system.",
"id": "GHSA-p9vx-hjr4-hvx2",
"modified": "2022-05-13T01:18:43Z",
"published": "2022-05-13T01:18:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000059"
},
{
"type": "WEB",
"url": "https://github.com/validformbuilder/validformbuilder/issues/126"
}
],
"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-P9X5-JP3H-96MM
Vulnerability from github – Published: 2026-03-02 21:41 – Updated: 2026-03-04 02:00Summary
qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime.
Impact
- Remote Code Execution
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 1.19.0"
},
"package": {
"ecosystem": "npm",
"name": "@builder.io/qwik"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-27971"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-02T21:41:18Z",
"nvd_published_at": "2026-03-03T23:15:56Z",
"severity": "CRITICAL"
},
"details": "### Summary\nqwik \u003c=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the `server$` RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where `require()` is available at runtime.\n\n### Impact\n- Remote Code Execution",
"id": "GHSA-p9x5-jp3h-96mm",
"modified": "2026-03-04T02:00:51Z",
"published": "2026-03-02T21:41:18Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27971"
},
{
"type": "PACKAGE",
"url": "https://github.com/QwikDev/qwik"
},
{
"type": "WEB",
"url": "https://github.com/QwikDev/qwik/releases/tag/%40builder.io%2Fqwik%401.19.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Qwik vulnerable to Unauthenticated RCE via server$ Deserialization"
}
GHSA-PC4W-8V5J-29W9
Vulnerability from github – Published: 2021-09-01 18:31 – Updated: 2021-08-30 21:46Neo4j through 3.4.18 (with the shell server enabled) exposes an RMI service that arbitrarily deserializes Java objects, e.g., through setSessionVariable. An attacker can abuse this for remote code execution because there are dependencies with exploitable gadget chains.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.neo4j:neo4j"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-34371"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2021-08-30T21:46:09Z",
"nvd_published_at": "2021-08-05T20:15:00Z",
"severity": "CRITICAL"
},
"details": "Neo4j through 3.4.18 (with the shell server enabled) exposes an RMI service that arbitrarily deserializes Java objects, e.g., through setSessionVariable. An attacker can abuse this for remote code execution because there are dependencies with exploitable gadget chains.",
"id": "GHSA-pc4w-8v5j-29w9",
"modified": "2021-08-30T21:46:09Z",
"published": "2021-09-01T18:31:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34371"
},
{
"type": "PACKAGE",
"url": "https://github.com/neo4j/neo4j"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/50170"
}
],
"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"
}
],
"summary": "Deserialization of Untrusted Data in Neo4j"
}
GHSA-PCCM-93C8-H8QM
Vulnerability from github – Published: 2026-04-21 12:30 – Updated: 2026-04-21 12:30Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through 3.106.0.
{
"affected": [],
"aliases": [
"CVE-2026-39467"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-21T10:16:29Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through 3.106.0.",
"id": "GHSA-pccm-93c8-h8qm",
"modified": "2026-04-21T12:30:24Z",
"published": "2026-04-21T12:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39467"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/ml-slider/vulnerability/wordpress-responsive-slider-by-metaslider-plugin-3-106-0-php-object-injection-vulnerability?_s_id=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-PF55-GH7M-56FG
Vulnerability from github – Published: 2026-06-15 21:30 – Updated: 2026-06-15 21:30Unauthenticated PHP Object Injection in OttoKit <= 1.1.27 versions.
{
"affected": [],
"aliases": [
"CVE-2026-49781"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-15T21:17:22Z",
"severity": "CRITICAL"
},
"details": "Unauthenticated PHP Object Injection in OttoKit \u003c= 1.1.27 versions.",
"id": "GHSA-pf55-gh7m-56fg",
"modified": "2026-06-15T21:30:50Z",
"published": "2026-06-15T21:30:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49781"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/suretriggers/vulnerability/wordpress-ottokit-plugin-1-1-27-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"
}
]
}
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.