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.
4801 vulnerabilities reference this CWE, most recent first.
GHSA-JP3P-M9QW-PGFJ
Vulnerability from github – Published: 2023-10-16 21:30 – Updated: 2024-04-04 08:41The WordPress Gallery Plugin WordPress plugin before 3.39 is vulnerable to PHAR Deserialization due to a lack of input parameter validation in the gallery_edit function, allowing an attacker to access arbitrary resources on the server.
{
"affected": [],
"aliases": [
"CVE-2023-3154"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-16T20:15:14Z",
"severity": "HIGH"
},
"details": "The WordPress Gallery Plugin WordPress plugin before 3.39 is vulnerable to PHAR Deserialization due to a lack of input parameter validation in the `gallery_edit` function, allowing an attacker to access arbitrary resources on the server.",
"id": "GHSA-jp3p-m9qw-pgfj",
"modified": "2024-04-04T08:41:14Z",
"published": "2023-10-16T21:30:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3154"
},
{
"type": "WEB",
"url": "https://wpscan.com/vulnerability/ed099489-1db4-4b42-9f72-77de39c9e01e"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-JP9R-MMHW-VFF3
Vulnerability from github – Published: 2026-04-29 15:30 – Updated: 2026-05-06 22:47Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1 through 3.2.9 (both inclusive) invokes parameterless constructors of classes specified in configuration when deserializing inheritance strategies, without restricting the classes that can be instantiated.
This can be abused by attackers with Item/Configure permission to instantiate arbitrary types, which may lead to information disclosure or other impacts depending on the classes available on the classpath.
Matrix Authorization Strategy Plugin 3.2.10 verifies that the class being instantiated is an inheritance strategy implementation, preventing instantiation of arbitrary types.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 3.2.9"
},
"package": {
"ecosystem": "Maven",
"name": "org.jenkins-ci.plugins:matrix-auth"
},
"ranges": [
{
"events": [
{
"introduced": "2.0-beta-1"
},
{
"fixed": "3.2.10"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-42521"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-06T22:47:11Z",
"nvd_published_at": "2026-04-29T14:16:19Z",
"severity": "MODERATE"
},
"details": "Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1 through 3.2.9 (both inclusive) invokes parameterless constructors of classes specified in configuration when deserializing inheritance strategies, without restricting the classes that can be instantiated.\n\nThis can be abused by attackers with Item/Configure permission to instantiate arbitrary types, which may lead to information disclosure or other impacts depending on the classes available on the classpath.\n\nMatrix Authorization Strategy Plugin 3.2.10 verifies that the class being instantiated is an inheritance strategy implementation, preventing instantiation of arbitrary types.",
"id": "GHSA-jp9r-mmhw-vff3",
"modified": "2026-05-06T22:47:11Z",
"published": "2026-04-29T15:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42521"
},
{
"type": "PACKAGE",
"url": "https://github.com/jenkinsci/matrix-auth-plugin"
},
{
"type": "WEB",
"url": "https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3676"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Jenkins Matrix Authorization Strategy Plugin: Unsafe deserialization allows invocation of parameterless constructors"
}
GHSA-JPJ4-5XWP-CV23
Vulnerability from github – Published: 2022-02-09 22:44 – Updated: 2024-05-01 20:15In DolphinScheduler 1.2.0 and 1.2.1, with mysql connectorj a remote code execution vulnerability exists when choosing mysql as database.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.dolphinscheduler:dolphinscheduler"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-11974"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2021-04-08T21:00:19Z",
"nvd_published_at": "2020-12-18T21:15:00Z",
"severity": "CRITICAL"
},
"details": "In DolphinScheduler 1.2.0 and 1.2.1, with mysql connectorj a remote code execution vulnerability exists when choosing mysql as database.",
"id": "GHSA-jpj4-5xwp-cv23",
"modified": "2024-05-01T20:15:36Z",
"published": "2022-02-09T22:44:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11974"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r0de5e3d5516467c9429a8d4356eca17ccf156337345ac6b104748acb%40%3Ccommits.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r0de5e3d5516467c9429a8d4356eca17ccf156337345ac6b104748acb@%3Ccommits.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r33452d7b99a293bcf8f3e4bd664943847e2602e03a9e45d09d3f508a%40%3Ccommits.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r33452d7b99a293bcf8f3e4bd664943847e2602e03a9e45d09d3f508a@%3Ccommits.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r9fbe24539a873032b3e41243d44a730d6a2aae26335ac1e3271ea47d%40%3Ccommits.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r9fbe24539a873032b3e41243d44a730d6a2aae26335ac1e3271ea47d@%3Ccommits.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/ra81adacbfdd6f166f9cf155340674ffd4179386b8b75068639547c11%40%3Ccommits.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/ra81adacbfdd6f166f9cf155340674ffd4179386b8b75068639547c11@%3Ccommits.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rcbe4c248ef0c566e99fd19388a6c92aeef88167286546b675e9b1769%40%3Cdev.dolphinscheduler.apache.org%3E"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/04/09/8"
}
],
"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": "Remote code execution in DolphinScheduler"
}
GHSA-JQ43-856V-C3JR
Vulnerability from github – Published: 2022-05-24 19:02 – Updated: 2022-05-24 19:02In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, any authenticated user, such as a subscriber, could use the import_from_debug AJAX action to inject PHP objects.
{
"affected": [],
"aliases": [
"CVE-2021-24280"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-14T12:15:00Z",
"severity": "HIGH"
},
"details": "In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, any authenticated user, such as a subscriber, could use the import_from_debug AJAX action to inject PHP objects.",
"id": "GHSA-jq43-856v-c3jr",
"modified": "2022-05-24T19:02:29Z",
"published": "2022-05-24T19:02:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-24280"
},
{
"type": "WEB",
"url": "https://wpscan.com/vulnerability/db4ba6b0-887e-4ec1-8935-ab21d369b329"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/blog/2021/04/severe-vulnerabilities-patched-in-redirection-for-contact-form-7-plugin"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-JQ7G-H856-CCPG
Vulnerability from github – Published: 2025-04-11 15:32 – Updated: 2025-04-11 15:32The Everest Forms – Contact Form, Quiz, Survey, Newsletter & Payment Form Builder for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.1 via deserialization of untrusted input from the 'field_value' parameter. This makes it possible for unauthenticated attackers 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-2025-3439"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-11T13:15:41Z",
"severity": "CRITICAL"
},
"details": "The Everest Forms \u2013 Contact Form, Quiz, Survey, Newsletter \u0026 Payment Form Builder for WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.1.1 via deserialization of untrusted input from the \u0027field_value\u0027 parameter. This makes it possible for unauthenticated attackers 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-jq7g-h856-ccpg",
"modified": "2025-04-11T15:32:29Z",
"published": "2025-04-11T15:32:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3439"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/everest-forms/trunk/includes/admin/views/html-admin-page-entries-view.php#L147"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset/3268742"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0e5617a2-5670-4d98-a36b-942f71634642?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-JQMC-FXXP-R589
Vulnerability from github – Published: 2021-06-18 18:31 – Updated: 2024-10-28 14:01Tendenci 12.0.10 allows unrestricted deserialization in apps\helpdesk\views\staff.py.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 12.0.10"
},
"package": {
"ecosystem": "PyPI",
"name": "tendenci"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "12.0.11"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-14942"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-11T22:09:21Z",
"nvd_published_at": "2020-06-21T15:15:00Z",
"severity": "CRITICAL"
},
"details": "Tendenci 12.0.10 allows unrestricted deserialization in apps\\helpdesk\\views\\staff.py.",
"id": "GHSA-jqmc-fxxp-r589",
"modified": "2024-10-28T14:01:52Z",
"published": "2021-06-18T18:31:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14942"
},
{
"type": "WEB",
"url": "https://github.com/tendenci/tendenci/issues/867"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-jqmc-fxxp-r589"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tendenci/PYSEC-2020-112.yaml"
}
],
"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"
},
{
"score": "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",
"type": "CVSS_V4"
}
],
"summary": "Deserialization of Untrusted Data in Tendenci"
}
GHSA-JQW6-G9Q9-CWHQ
Vulnerability from github – Published: 2025-10-22 15:31 – Updated: 2026-01-20 15:31Deserialization of Untrusted Data vulnerability in rascals Noisa noisa allows Object Injection.This issue affects Noisa: from n/a through <= 2.6.0.
{
"affected": [],
"aliases": [
"CVE-2025-60039"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-22T15:15:56Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in rascals Noisa noisa allows Object Injection.This issue affects Noisa: from n/a through \u003c= 2.6.0.",
"id": "GHSA-jqw6-g9q9-cwhq",
"modified": "2026-01-20T15:31:29Z",
"published": "2025-10-22T15:31:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60039"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Theme/noisa/vulnerability/wordpress-noisa-theme-2-6-0-php-object-injection-vulnerability?_s_id=cve"
},
{
"type": "WEB",
"url": "https://vdp.patchstack.com/database/Wordpress/Theme/noisa/vulnerability/wordpress-noisa-theme-2-6-0-php-object-injection-vulnerability"
},
{
"type": "WEB",
"url": "https://vdp.patchstack.com/database/Wordpress/Theme/noisa/vulnerability/wordpress-noisa-theme-2-6-0-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-JR67-RVWM-64HR
Vulnerability from github – Published: 2024-03-28 09:31 – Updated: 2026-04-28 21:34Deserialization of Untrusted Data vulnerability in MainWP MainWP Links Manager Extension.This issue affects MainWP Links Manager Extension: from n/a through 2.1.
{
"affected": [],
"aliases": [
"CVE-2023-23649"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-28T07:15:49Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in MainWP MainWP Links Manager Extension.This issue affects MainWP Links Manager Extension: from n/a through 2.1.",
"id": "GHSA-jr67-rvwm-64hr",
"modified": "2026-04-28T21:34:23Z",
"published": "2024-03-28T09:31:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-23649"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/vulnerability/mainwp-links-manager-extension/wordpress-mainwp-links-manager-extension-plugin-2-1-unauthenticated-php-object-injection-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JR7Q-CC2X-97VJ
Vulnerability from github – Published: 2022-08-25 00:00 – Updated: 2022-08-29 20:06It was found that the original fix for log4j CVE-2021-44228 and CVE-2021-45046 in the OpenShift metering hive containers was incomplete, as not all JndiLookup.class files were removed. This CVE only applies to the OpenShift Metering hive container images, shipped in OpenShift 4.8, 4.7 and 4.6.
{
"affected": [],
"aliases": [
"CVE-2021-4125"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-24T16:15:00Z",
"severity": "HIGH"
},
"details": "It was found that the original fix for log4j CVE-2021-44228 and CVE-2021-45046 in the OpenShift metering hive containers was incomplete, as not all JndiLookup.class files were removed. This CVE only applies to the OpenShift Metering hive container images, shipped in OpenShift 4.8, 4.7 and 4.6.",
"id": "GHSA-jr7q-cc2x-97vj",
"modified": "2022-08-29T20:06:52Z",
"published": "2022-08-25T00:00:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4125"
},
{
"type": "WEB",
"url": "https://github.com/kube-reporting/hive/pull/71"
},
{
"type": "WEB",
"url": "https://github.com/kube-reporting/hive/pull/72"
},
{
"type": "WEB",
"url": "https://github.com/kube-reporting/hive/pull/73"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2021-4125"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2021-44228"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2021-45046"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2033121"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JR8M-X4P7-P3V5
Vulnerability from github – Published: 2026-05-19 12:31 – Updated: 2026-06-29 17:39The TYPO3 Crawler extension passes the X-T3Crawler-Meta response header from crawled URLs directly to PHP's unserialize(). An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task. This has been patched in versions 12.0.11 and 11.0.13.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "tomasnorre/crawler"
},
"ranges": [
{
"events": [
{
"introduced": "12.0.0"
},
{
"fixed": "12.0.11"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "tomasnorre/crawler"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "11.0.13"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-8727"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-29T17:39:15Z",
"nvd_published_at": "2026-05-19T10:16:25Z",
"severity": "HIGH"
},
"details": "The TYPO3 Crawler extension passes the X-T3Crawler-Meta response header from crawled URLs directly to PHP\u0027s `unserialize()`. An attacker controlling a crawled endpoint can inject arbitrary serialized PHP objects, leading to Remote Code Execution on the TYPO3 server. Exploitation requires administrative privileges to configure a crawler-enabled page and trigger the crawl via a Scheduler task. This has been patched in versions 12.0.11 and 11.0.13.",
"id": "GHSA-jr8m-x4p7-p3v5",
"modified": "2026-06-29T17:39:15Z",
"published": "2026-05-19T12:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8727"
},
{
"type": "WEB",
"url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/tomasnorre/crawler/CVE-2026-8727.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/tomasnorre/crawler"
},
{
"type": "WEB",
"url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-008"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L",
"type": "CVSS_V4"
}
],
"summary": "TYPO3 Remote Code Execution in extension \"Site Crawler\" (crawler)"
}
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.