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.
4794 vulnerabilities reference this CWE, most recent first.
GHSA-XPHJ-M9CC-8FMQ
Vulnerability from github – Published: 2022-05-13 01:25 – Updated: 2024-10-17 16:19When an application with unsupported Codehaus versions of Groovy from 1.7.0 to 2.4.3, Apache Groovy 2.4.4 to 2.4.7 on classpath uses standard Java serialization mechanisms, e.g. to communicate between servers or to store local data, it was possible for an attacker to bake a special serialized object that will execute code directly when deserialized. All applications which rely on serialization and do not isolate the code which deserializes objects were subject to this vulnerability.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 2.4.7"
},
"package": {
"ecosystem": "Maven",
"name": "org.codehaus.groovy:groovy"
},
"ranges": [
{
"events": [
{
"introduced": "1.7.0"
},
{
"fixed": "2.4.8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 2.4.7"
},
"package": {
"ecosystem": "Maven",
"name": "org.codehaus.groovy:groovy-all"
},
"ranges": [
{
"events": [
{
"introduced": "1.7.0"
},
{
"fixed": "2.4.8"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2016-6814"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2022-07-06T19:46:12Z",
"nvd_published_at": "2018-01-18T18:29:00Z",
"severity": "CRITICAL"
},
"details": "When an application with unsupported Codehaus versions of Groovy from 1.7.0 to 2.4.3, Apache Groovy 2.4.4 to 2.4.7 on classpath uses standard Java serialization mechanisms, e.g. to communicate between servers or to store local data, it was possible for an attacker to bake a special serialized object that will execute code directly when deserialized. All applications which rely on serialization and do not isolate the code which deserializes objects were subject to this vulnerability.",
"id": "GHSA-xphj-m9cc-8fmq",
"modified": "2024-10-17T16:19:08Z",
"published": "2022-05-13T01:25:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-6814"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:0868"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:2486"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2017:2596"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202003-01"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2020.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
},
{
"type": "WEB",
"url": "http://mail-archives.apache.org/mod_mbox/www-announce/201701.mbox/%3CCADRx3PMZ2hBCGDTY35zYXFGaDnjAs0tc5-upaVs6QN2sYUejyA%40mail.gmail.com%3E"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2017-0272.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html"
}
],
"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"
}
],
"summary": "Deserialization of Untrusted Data in Groovy"
}
GHSA-XPMV-W84F-HM92
Vulnerability from github – Published: 2023-03-27 15:30 – Updated: 2023-03-31 00:30Delta Electronics InfraSuite Device Master versions prior to 1.0.5 are affected by a deserialization vulnerability targeting the Device-gateway service, which could allow deserialization of requests prior to authentication, resulting in remote code execution.
{
"affected": [],
"aliases": [
"CVE-2023-1139"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-27T15:15:00Z",
"severity": "HIGH"
},
"details": "Delta Electronics InfraSuite Device Master versions prior to 1.0.5 are affected by a deserialization vulnerability targeting the Device-gateway service, which could allow deserialization of requests prior to authentication, resulting in remote code execution.",
"id": "GHSA-xpmv-w84f-hm92",
"modified": "2023-03-31T00:30:18Z",
"published": "2023-03-27T15:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1139"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-23-080-02"
}
],
"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-XPRW-MH67-9XF5
Vulnerability from github – Published: 2026-02-19 18:31 – Updated: 2026-02-20 00:31Deserialization of Untrusted Data vulnerability in codetipi Valenti valenti allows Object Injection.This issue affects Valenti: from n/a through <= 5.6.3.5.
{
"affected": [],
"aliases": [
"CVE-2026-23544"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-19T09:16:12Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in codetipi Valenti valenti allows Object Injection.This issue affects Valenti: from n/a through \u003c= 5.6.3.5.",
"id": "GHSA-xprw-mh67-9xf5",
"modified": "2026-02-20T00:31:52Z",
"published": "2026-02-19T18:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23544"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Theme/valenti/vulnerability/wordpress-valenti-theme-5-6-3-5-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-XPRW-R8HX-4RQM
Vulnerability from github – Published: 2025-03-16 00:35 – Updated: 2026-04-01 18:33Deserialization of Untrusted Data vulnerability in magepeopleteam Booking and Rental Manager allows Object Injection. This issue affects Booking and Rental Manager: from n/a through 2.2.6.
{
"affected": [],
"aliases": [
"CVE-2025-26921"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-15T22:15:14Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in magepeopleteam Booking and Rental Manager allows Object Injection. This issue affects Booking and Rental Manager: from n/a through 2.2.6.",
"id": "GHSA-xprw-r8hx-4rqm",
"modified": "2026-04-01T18:33:58Z",
"published": "2025-03-16T00:35:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-26921"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/booking-and-rental-manager-for-woocommerce/vulnerability/wordpress-booking-and-rental-manager-plugin-2-2-6-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-XPVX-V3VC-27GC
Vulnerability from github – Published: 2023-10-19 15:31 – Updated: 2024-04-04 08:48The SolarWinds Access Rights Manager was susceptible to Remote Code Execution Vulnerability. This vulnerability can be abused by unauthenticated users on SolarWinds ARM Server.
{
"affected": [],
"aliases": [
"CVE-2023-35182"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-19T15:15:09Z",
"severity": "CRITICAL"
},
"details": "The SolarWinds Access Rights Manager was susceptible to Remote Code Execution Vulnerability. This vulnerability can be abused by unauthenticated users on SolarWinds ARM Server.",
"id": "GHSA-xpvx-v3vc-27gc",
"modified": "2024-04-04T08:48:11Z",
"published": "2023-10-19T15:31:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-35182"
},
{
"type": "WEB",
"url": "https://documentation.solarwinds.com/en/success_center/arm/content/release_notes/arm_2023-2-1_release_notes.htm"
},
{
"type": "WEB",
"url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2023-35182"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XPXV-CX25-38P3
Vulnerability from github – Published: 2024-01-31 00:30 – Updated: 2024-05-01 21:30Insecure deserialization in ROS2 Foxy Fitzroy ROS_VERSION=2 and ROS_PYTHON_VERSION=3 allows attackers to execute arbitrary code via a crafted input.
{
"affected": [],
"aliases": [
"CVE-2023-51204"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-30T22:15:52Z",
"severity": "CRITICAL"
},
"details": "Insecure deserialization in ROS2 Foxy Fitzroy ROS_VERSION=2 and ROS_PYTHON_VERSION=3 allows attackers to execute arbitrary code via a crafted input.",
"id": "GHSA-xpxv-cx25-38p3",
"modified": "2024-05-01T21:30:30Z",
"published": "2024-01-31T00:30:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51204"
},
{
"type": "WEB",
"url": "https://github.com/16yashpatel/CVE-2023-51204"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/04/23/2"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/04/23/3"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/04/23/4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/04/23/5"
}
],
"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-XQ69-5H5V-X9X4
Vulnerability from github – Published: 2026-06-10 00:31 – Updated: 2026-06-12 21:51JsonKafkaHeaderMapper and the deprecated DefaultKafkaHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Combined with Jackson's default bean deserialization, a producer could supply crafted header values that caused the consumer to deserialize arbitrary JDK types.
Affected versions: Spring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.0.5"
},
"package": {
"ecosystem": "Maven",
"name": "org.springframework.kafka:spring-kafka"
},
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 3.3.15"
},
"package": {
"ecosystem": "Maven",
"name": "org.springframework.kafka:spring-kafka"
},
"ranges": [
{
"events": [
{
"introduced": "3.3.0"
},
{
"fixed": "3.3.16"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.kafka:spring-kafka"
},
"ranges": [
{
"events": [
{
"introduced": "3.2.0"
},
{
"last_affected": "3.2.13"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.kafka:spring-kafka"
},
"ranges": [
{
"events": [
{
"introduced": "2.9.0"
},
{
"last_affected": "2.9.13"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.springframework.kafka:spring-kafka"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "2.8.11"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-41731"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-12T21:51:09Z",
"nvd_published_at": "2026-06-10T00:16:52Z",
"severity": "HIGH"
},
"details": "JsonKafkaHeaderMapper and the deprecated DefaultKafkaHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Combined with Jackson\u0027s default bean deserialization, a producer could supply crafted header values that caused the consumer to deserialize arbitrary JDK types.\n\nAffected versions:\nSpring for Apache Kafka 4.0.0 through 4.0.5; 3.3.0 through 3.3.15; 3.2.0 through 3.2.13; 2.9.0 through 2.9.13; 2.8.0 through 2.8.11.",
"id": "GHSA-xq69-5h5v-x9x4",
"modified": "2026-06-12T21:51:09Z",
"published": "2026-06-10T00:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41731"
},
{
"type": "PACKAGE",
"url": "https://github.com/spring-projects/spring-kafka"
},
{
"type": "WEB",
"url": "https://spring.io/security/cve-2026-41731"
}
],
"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"
}
],
"summary": "In Spring for Apache Kafka, overly broad trusted-package matching in header mappers exposes JDK classes to deserialization"
}
GHSA-XQHH-5J5H-PQFC
Vulnerability from github – Published: 2024-07-24 15:31 – Updated: 2024-07-26 15:31In Progress® Telerik® Report Server versions prior to 2024 Q2 (10.1.24.709), a remote code execution attack is possible through an insecure deserialization vulnerability.
{
"affected": [],
"aliases": [
"CVE-2024-6327"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-24T14:15:06Z",
"severity": "CRITICAL"
},
"details": "In Progress\u00ae Telerik\u00ae Report Server versions prior to 2024 Q2 (10.1.24.709), a remote code execution attack is possible through an insecure deserialization vulnerability.",
"id": "GHSA-xqhh-5j5h-pqfc",
"modified": "2024-07-26T15:31:50Z",
"published": "2024-07-24T15:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6327"
},
{
"type": "WEB",
"url": "https://docs.telerik.com/report-server/knowledge-base/deserialization-vulnerability-cve-2024-6327"
},
{
"type": "WEB",
"url": "https://www.telerik.com/report-server"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XQW8-QJQQ-X3QG
Vulnerability from github – Published: 2023-07-31 15:30 – Updated: 2024-04-04 06:26Deserialization of Untrusted Data vulnerability in yolo 5 allows attackers to execute arbitrary code via crafted yaml file.
{
"affected": [],
"aliases": [
"CVE-2021-31680"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-31T14:15:10Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in yolo 5 allows attackers to execute arbitrary code via crafted yaml file.",
"id": "GHSA-xqw8-qjqq-x3qg",
"modified": "2024-04-04T06:26:34Z",
"published": "2023-07-31T15:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31680"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/1-other-yolov5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-XR2R-HH4X-GV58
Vulnerability from github – Published: 2022-05-13 01:09 – Updated: 2025-04-20 03:35The xmlBufAttrSerializeTxtContent function in xmlsave.c in libxml2 allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a non-UTF-8 attribute value, related to serialization. NOTE: this vulnerability may be a duplicate of CVE-2016-3627.
{
"affected": [],
"aliases": [
"CVE-2016-4483"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-04-11T16:59:00Z",
"severity": "HIGH"
},
"details": "The xmlBufAttrSerializeTxtContent function in xmlsave.c in libxml2 allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a non-UTF-8 attribute value, related to serialization. NOTE: this vulnerability may be a duplicate of CVE-2016-3627.",
"id": "GHSA-xr2r-hh4x-gv58",
"modified": "2025-04-20T03:35:46Z",
"published": "2022-05-13T01:09:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-4483"
},
{
"type": "WEB",
"url": "https://git.gnome.org/browse/libxml2/commit/?id=c97750d11bb8b6f3303e7131fe526a61ac65bcfd"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201701-37"
},
{
"type": "WEB",
"url": "https://www.tenable.com/security/tns-2016-18"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-2957.html"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2016/dsa-3593"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/05/03/8"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/05/04/7"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/06/07/4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/06/07/5"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/90013"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1036348"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.