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.
4837 vulnerabilities reference this CWE, most recent first.
GHSA-M496-X567-F98C
Vulnerability from github – Published: 2021-04-22 16:10 – Updated: 2021-04-30 20:19Impact
CVE-2021-3007: Backport of Zend_Http_Response_Stream, added certain type checking as a way to prevent exploitation. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3007
This vulnerability is caused by the unsecured deserialization of an object. In versions higher than Zend Framework 3.0.0, the attacker abuses the Zend3 feature that loads classes from objects in order to upload and execute malicious code in the server. The code can be uploaded using the “callback” parameter, which in this case inserts a malicious code instead of the “callbackOptions” array.
Patches
Has the problem been patched? What versions should users upgrade to? v20.0.9 v19.4.13
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 19.4.12"
},
"package": {
"ecosystem": "Packagist",
"name": "openmage/magento-lts"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "19.4.13"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 20.0.8"
},
"package": {
"ecosystem": "Packagist",
"name": "openmage/magento-lts"
},
"ranges": [
{
"events": [
{
"introduced": "20.0.0"
},
{
"fixed": "20.0.9"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-21426"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2021-04-21T20:16:53Z",
"nvd_published_at": "2021-04-21T21:15:00Z",
"severity": "CRITICAL"
},
"details": "### Impact\nCVE-2021-3007: Backport of Zend_Http_Response_Stream, added certain type checking as a way to prevent exploitation. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3007\n\nThis vulnerability is caused by the unsecured deserialization of an object. In versions higher than Zend Framework 3.0.0, the attacker abuses the Zend3 feature that loads classes from objects in order to upload and execute malicious code in the server. The code can be uploaded using the \u201ccallback\u201d parameter, which in this case inserts a malicious code instead of the \u201ccallbackOptions\u201d array.\n\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\nv20.0.9 v19.4.13",
"id": "GHSA-m496-x567-f98c",
"modified": "2021-04-30T20:19:58Z",
"published": "2021-04-22T16:10:49Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-m496-x567-f98c"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21426"
}
],
"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": "Fixes a bug in Zend Framework\u0027s Stream HTTP Wrapper"
}
GHSA-M499-QJ3G-VHPX
Vulnerability from github – Published: 2022-05-13 01:10 – Updated: 2022-05-13 01:10Insecure deserialization of a specially crafted serialized object, in CA Release Automation 6.5 and earlier, allows attackers to potentially execute arbitrary code.
{
"affected": [],
"aliases": [
"CVE-2018-15691"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-08-30T14:29:00Z",
"severity": "CRITICAL"
},
"details": "Insecure deserialization of a specially crafted serialized object, in CA Release Automation 6.5 and earlier, allows attackers to potentially execute arbitrary code.",
"id": "GHSA-m499-qj3g-vhpx",
"modified": "2022-05-13T01:10:51Z",
"published": "2022-05-13T01:10:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15691"
},
{
"type": "WEB",
"url": "https://support.ca.com/us/product-content/recommended-reading/security-notices/ca20180829-03--security-notice-for-ca-release-automation.html"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/45425"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/105197"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041591"
}
],
"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-M4F6-VCJ4-W5MX
Vulnerability from github – Published: 2025-01-29 20:50 – Updated: 2025-04-09 20:10Issue
Snowflake discovered and remediated a vulnerability in the Snowflake Connector for Python. The OCSP response cache uses pickle as the serialization format, potentially leading to local privilege escalation.
This vulnerability affects versions 2.7.12 through 3.13.0. Snowflake fixed the issue in version 3.13.1.
Vulnerability Details
The OCSP response cache is saved locally on the machine running the Connector using the pickle serialization format. This can potentially lead to local privilege escalation if an attacker has write access to the OCSP response cache file.
Solution
Snowflake released version 3.13.1 of the Snowflake Connector for Python, which fixes this issue. We recommend users upgrade to version 3.13.1.
Additional Information
If you discover a security vulnerability in one of our products or websites, please report the issue to HackerOne. For more information, please see our Vulnerability Disclosure Policy.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 3.13.0"
},
"package": {
"ecosystem": "PyPI",
"name": "snowflake-connector-python"
},
"ranges": [
{
"events": [
{
"introduced": "2.7.12"
},
{
"fixed": "3.13.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-24794"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2025-01-29T20:50:18Z",
"nvd_published_at": "2025-01-29T21:15:21Z",
"severity": "MODERATE"
},
"details": "### Issue\nSnowflake discovered and remediated a vulnerability in the Snowflake Connector for Python. The OCSP response cache uses pickle as the serialization format, potentially leading to local privilege escalation.\n\nThis vulnerability affects versions 2.7.12 through 3.13.0. Snowflake fixed the issue in version 3.13.1.\n\n### Vulnerability Details\nThe OCSP response cache is saved locally on the machine running the Connector using the pickle serialization format. This can potentially lead to local privilege escalation if an attacker has write access to the OCSP response cache file.\n\n### Solution\nSnowflake released version 3.13.1 of the Snowflake Connector for Python, which fixes this issue. We recommend users upgrade to version 3.13.1.\n\n### Additional Information\nIf you discover a security vulnerability in one of our products or websites, please report the issue to HackerOne. For more information, please see our [Vulnerability Disclosure Policy](https://hackerone.com/snowflake?type=team).",
"id": "GHSA-m4f6-vcj4-w5mx",
"modified": "2025-04-09T20:10:43Z",
"published": "2025-01-29T20:50:18Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/snowflakedb/snowflake-connector-python/security/advisories/GHSA-m4f6-vcj4-w5mx"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24794"
},
{
"type": "WEB",
"url": "https://github.com/snowflakedb/snowflake-connector-python/commit/3769b43822357c3874c40f5e74068458c2dc79af"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/snowflake-connector-python/PYSEC-2025-27.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/snowflakedb/snowflake-connector-python"
},
{
"type": "WEB",
"url": "https://github.com/snowflakedb/snowflake-connector-python/releases/tag/v3.13.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "snowflake-connector-python vulnerable to insecure deserialization of the OCSP response cache"
}
GHSA-M4H9-M7M3-X3C8
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-17 18:35Unauthenticated PHP Object Injection in Reisen <= 1.4.1 versions.
{
"affected": [],
"aliases": [
"CVE-2025-69111"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T14:17:32Z",
"severity": "CRITICAL"
},
"details": "Unauthenticated PHP Object Injection in Reisen \u003c= 1.4.1 versions.",
"id": "GHSA-m4h9-m7m3-x3c8",
"modified": "2026-06-17T18:35:54Z",
"published": "2026-06-17T18:35:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-69111"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/reisen/vulnerability/wordpress-reisen-theme-1-4-1-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-M4HW-R893-XH4G
Vulnerability from github – Published: 2022-05-17 01:43 – Updated: 2025-04-12 03:01view_help.php in the backend help system in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote authenticated backend users to unserialize arbitrary objects and possibly execute arbitrary PHP code via an unspecified parameter, related to a "missing signature (HMAC)."
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms"
},
"ranges": [
{
"events": [
{
"introduced": "4.5.0"
},
{
"fixed": "4.5.19"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms"
},
"ranges": [
{
"events": [
{
"introduced": "4.6.0"
},
{
"fixed": "4.6.12"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "typo3/cms"
},
"ranges": [
{
"events": [
{
"introduced": "4.7.0"
},
{
"fixed": "4.7.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2012-3527"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2025-04-12T03:01:43Z",
"nvd_published_at": "2012-09-05T23:55:00Z",
"severity": "MODERATE"
},
"details": "view_help.php in the backend help system in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote authenticated backend users to unserialize arbitrary objects and possibly execute arbitrary PHP code via an unspecified parameter, related to a \"missing signature (HMAC).\"",
"id": "GHSA-m4hw-r893-xh4g",
"modified": "2025-04-12T03:01:43Z",
"published": "2022-05-17T01:43:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2012-3527"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/77791"
},
{
"type": "PACKAGE",
"url": "https://github.com/TYPO3/typo3"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20120817233148/http://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2012-004"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2012/dsa-2537"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2012/08/22/8"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "TYPO3 allows remote authenticated backend users to unserialize arbitrary objects"
}
GHSA-M4JW-WGMF-889X
Vulnerability from github – Published: 2026-03-24 21:31 – Updated: 2026-04-01 23:11NVIDIA NeMo Framework contains a vulnerability in checkpoint loading where an attacker could cause remote code execution. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, information disclosure and data tampering.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "nemo-toolkit"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.6.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-24157"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-01T23:11:39Z",
"nvd_published_at": "2026-03-24T21:16:27Z",
"severity": "HIGH"
},
"details": "NVIDIA NeMo Framework contains a vulnerability in checkpoint loading where an attacker could cause remote code execution. A successful exploit of this vulnerability might lead to code execution, escalation of privileges, information disclosure and data tampering.",
"id": "GHSA-m4jw-wgmf-889x",
"modified": "2026-04-01T23:11:40Z",
"published": "2026-03-24T21:31:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24157"
},
{
"type": "PACKAGE",
"url": "https://github.com/NVIDIA-NeMo/NeMo"
},
{
"type": "WEB",
"url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5800"
},
{
"type": "WEB",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-24157"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "NVIDIA NeMo Framework contains an RCE vulnerability in checkpoint loading"
}
GHSA-M56G-8MXC-8694
Vulnerability from github – Published: 2022-05-24 17:30 – Updated: 2022-06-30 00:00IBM QRadar SIEM 7.3 and 7.4 could allow a remote attacker to execute arbitrary commands on the system, caused by insecure deserialization of user-supplied content by the Java deserialization function. By sending a malicious serialized Java object, an attacker could exploit this vulnerability to execute arbitrary commands on the system. IBM X-Force ID: 176140.
{
"affected": [],
"aliases": [
"CVE-2020-4280"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-10-08T14:15:00Z",
"severity": "HIGH"
},
"details": "IBM QRadar SIEM 7.3 and 7.4 could allow a remote attacker to execute arbitrary commands on the system, caused by insecure deserialization of user-supplied content by the Java deserialization function. By sending a malicious serialized Java object, an attacker could exploit this vulnerability to execute arbitrary commands on the system. IBM X-Force ID: 176140.",
"id": "GHSA-m56g-8mxc-8694",
"modified": "2022-06-30T00:00:29Z",
"published": "2022-05-24T17:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-4280"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/176140"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/6344079"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/159589/QRadar-RemoteJavaScript-Deserialization.html"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2020/Oct/18"
}
],
"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-M57W-65J8-QXV7
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-17 18:35Unauthenticated PHP Object Injection in Léonie <= 1.2.1 versions.
{
"affected": [],
"aliases": [
"CVE-2026-40758"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T13:20:37Z",
"severity": "HIGH"
},
"details": "Unauthenticated PHP Object Injection in L\u00e9onie \u003c= 1.2.1 versions.",
"id": "GHSA-m57w-65j8-qxv7",
"modified": "2026-06-17T18:35:50Z",
"published": "2026-06-17T18:35:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40758"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/lonie/vulnerability/wordpress-leonie-theme-1-2-1-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-M592-CR2F-4QG5
Vulnerability from github – Published: 2026-01-13 00:30 – Updated: 2026-01-16 00:30LlamaIndex (run-llama/llama_index) versions up to and including 0.11.6 contain an unsafe deserialization vulnerability in BGEM3Index.load_from_disk() in llama_index/indices/managed/bge_m3/base.py. The function uses pickle.load() to deserialize multi_embed_store.pkl from a user-supplied persist_dir without validation. An attacker who can provide a crafted persist directory containing a malicious pickle file can trigger arbitrary code execution when the victim loads the index from disk.
{
"affected": [],
"aliases": [
"CVE-2024-14021"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-12T23:15:51Z",
"severity": "HIGH"
},
"details": "LlamaIndex (run-llama/llama_index) versions up to and including 0.11.6 contain an unsafe deserialization vulnerability in BGEM3Index.load_from_disk() in llama_index/indices/managed/bge_m3/base.py. The function uses pickle.load() to deserialize multi_embed_store.pkl from a user-supplied persist_dir without validation. An attacker who can provide a crafted persist directory containing a malicious pickle file can trigger arbitrary code execution when the victim loads the index from disk.",
"id": "GHSA-m592-cr2f-4qg5",
"modified": "2026-01-16T00:30:54Z",
"published": "2026-01-13T00:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-14021"
},
{
"type": "WEB",
"url": "https://github.com/run-llama/llama_index"
},
{
"type": "WEB",
"url": "https://huntr.com/bounties/ab4ceeb4-aa85-4d1c-aaca-4eda1b71fc12"
},
{
"type": "WEB",
"url": "https://www.llamaindex.ai"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/llamaindex-bgem3index-unsafe-deserialization"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-M5CF-54F6-6GW2
Vulnerability from github – Published: 2026-04-28 18:30 – Updated: 2026-04-28 18:30An issue was discovered in Cista v0.15 and below. Insecure deserialization of untrusted input under certain conditions may lead to leaking of stack/heap addresses which may be used to bypass ASLR. Classes with pointer-like mechanics under the cista::raw namespace are prone to reference tampering, where Cista does not perform sufficient checks to safeguard against self-referencing pointers and referencing other data within the payload. The leak occurs if the deserialized values are observable by the attacker.
{
"affected": [],
"aliases": [
"CVE-2025-60887"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-28T16:16:05Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in Cista v0.15 and below. Insecure deserialization of untrusted input under certain conditions may lead to leaking of stack/heap addresses which may be used to bypass ASLR. Classes with pointer-like mechanics under the cista::raw namespace are prone to reference tampering, where Cista does not perform sufficient checks to safeguard against self-referencing pointers and referencing other data within the payload. The leak occurs if the deserialized values are observable by the attacker.",
"id": "GHSA-m5cf-54f6-6gw2",
"modified": "2026-04-28T18:30:32Z",
"published": "2026-04-28T18:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60887"
},
{
"type": "WEB",
"url": "https://gist.github.com/TrebledJ/66cc0ed37bdb3e70ce0ef98396790771"
},
{
"type": "WEB",
"url": "http://cista.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"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.