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.
4798 vulnerabilities reference this CWE, most recent first.
GHSA-64QG-FP47-XMGF
Vulnerability from github – Published: 2022-05-17 01:18 – Updated: 2022-05-17 01:18CrushFTP 8.x before 8.2.0 has a serialization vulnerability.
{
"affected": [],
"aliases": [
"CVE-2017-14035"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-08-30T21:29:00Z",
"severity": "CRITICAL"
},
"details": "CrushFTP 8.x before 8.2.0 has a serialization vulnerability.",
"id": "GHSA-64qg-fp47-xmgf",
"modified": "2022-05-17T01:18:41Z",
"published": "2022-05-17T01:18:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14035"
},
{
"type": "WEB",
"url": "https://crushftp.com/version8.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"
}
]
}
GHSA-64WF-MPW9-CW5V
Vulnerability from github – Published: 2025-04-08 21:31 – Updated: 2025-04-08 21:31ColdFusion versions 2023.12, 2021.18, 2025.0 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2025-24447"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-08T20:15:20Z",
"severity": "CRITICAL"
},
"details": "ColdFusion versions 2023.12, 2021.18, 2025.0 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-64wf-mpw9-cw5v",
"modified": "2025-04-08T21:31:40Z",
"published": "2025-04-08T21:31:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24447"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb25-15.html"
}
],
"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:N",
"type": "CVSS_V3"
}
]
}
GHSA-64WR-F4H3-5MW7
Vulnerability from github – Published: 2025-12-24 00:30 – Updated: 2025-12-24 00:30Tencent MedicalNet generate_model Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent MedicalNet. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the generate_model function. 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 root. Was ZDI-CAN-27192.
{
"affected": [],
"aliases": [
"CVE-2025-13714"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-23T22:15:46Z",
"severity": "HIGH"
},
"details": "Tencent MedicalNet generate_model Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent MedicalNet. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the generate_model function. 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 root. Was ZDI-CAN-27192.",
"id": "GHSA-64wr-f4h3-5mw7",
"modified": "2025-12-24T00:30:14Z",
"published": "2025-12-24T00:30:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13714"
},
{
"type": "WEB",
"url": "https://github.com/Tencent/MedicalNet/commit/1679f7ced8fd3e9ce1acc3b86cd840b5abdaa836"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-1031"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-64XX-CQ4Q-MF44
Vulnerability from github – Published: 2021-08-25 14:48 – Updated: 2022-02-08 21:01Impact
The vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. A user is only affected if using the version out of the box with JDK 1.7u21 or below. However, this scenario can be adjusted easily to an external Xalan that works regardless of the version of the Java runtime. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types.
Patches
XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
Workarounds
See workarounds for the different versions covering all CVEs.
References
See full information about the nature of the vulnerability and the steps to reproduce it in XStream's documentation for CVE-2021-39139.
Credits
Lai Han of nsfocus security team found and reported the issue to XStream and provided the required information to reproduce it.
For more information
If you have any questions or comments about this advisory: * Open an issue in XStream * Contact us at XStream Google Group
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "com.thoughtworks.xstream:xstream"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.18"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-39139"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2021-08-23T18:21:57Z",
"nvd_published_at": "2021-08-23T18:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\nThe vulnerability may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. A user is only affected if using the version out of the box with JDK 1.7u21 or below. However, this scenario can be adjusted easily to an external Xalan that works regardless of the version of the Java runtime. No user is affected, who followed the recommendation to setup XStream\u0027s security framework with a whitelist limited to the minimal required types.\n\n### Patches\nXStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.\n\n### Workarounds\nSee [workarounds](https://x-stream.github.io/security.html#workaround) for the different versions covering all CVEs.\n\n### References\nSee full information about the nature of the vulnerability and the steps to reproduce it in XStream\u0027s documentation for [CVE-2021-39139](https://x-stream.github.io/CVE-2021-39139.html).\n\n### Credits\nLai Han of nsfocus security team found and reported the issue to XStream and provided the required information to reproduce it.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [XStream](https://github.com/x-stream/xstream/issues)\n* Contact us at [XStream Google Group](https://groups.google.com/group/xstream-user)\n",
"id": "GHSA-64xx-cq4q-mf44",
"modified": "2022-02-08T21:01:27Z",
"published": "2021-08-25T14:48:47Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/x-stream/xstream/security/advisories/GHSA-64xx-cq4q-mf44"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39139"
},
{
"type": "PACKAGE",
"url": "https://github.com/x-stream/xstream"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210923-0003"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-5004"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujan2022.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2022.html"
},
{
"type": "WEB",
"url": "https://x-stream.github.io/CVE-2021-39139.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "XStream is vulnerable to an Arbitrary Code Execution attack"
}
GHSA-652W-MP65-JG96
Vulnerability from github – Published: 2026-07-13 12:35 – Updated: 2026-07-13 12:35Deserialization of Untrusted Data vulnerability in Marcus (aka @msykes) Events Manager events-manager allows Object Injection.This issue affects Events Manager: from n/a through <= 7.3.6.
{
"affected": [],
"aliases": [
"CVE-2026-57713"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-13T10:16:38Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in Marcus (aka @msykes) Events Manager events-manager allows Object Injection.This issue affects Events Manager: from n/a through \u003c= 7.3.6.",
"id": "GHSA-652w-mp65-jg96",
"modified": "2026-07-13T12:35:04Z",
"published": "2026-07-13T12:35:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57713"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Plugin/events-manager/vulnerability/wordpress-events-manager-plugin-7-3-6-php-object-injection-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6542-MJH6-9G8W
Vulnerability from github – Published: 2023-02-15 21:30 – Updated: 2023-02-24 21:30SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with Orion admin-level account access to SolarWinds Web Console to execute arbitrary commands.
{
"affected": [],
"aliases": [
"CVE-2022-47504"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-15T19:15:00Z",
"severity": "HIGH"
},
"details": "SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with Orion admin-level account access to SolarWinds Web Console to execute arbitrary commands.",
"id": "GHSA-6542-mjh6-9g8w",
"modified": "2023-02-24T21:30:20Z",
"published": "2023-02-15T21:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-47504"
},
{
"type": "WEB",
"url": "https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/solarwinds_platform_2023-1_release_notes.htm"
},
{
"type": "WEB",
"url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2022-47504"
}
],
"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-6556-FWC2-FG2P
Vulnerability from github – Published: 2025-12-30 15:20 – Updated: 2026-06-22 22:19Summary
Picklescan uses the numpy.f2py.crackfortran._eval_length function (a NumPy F2PY helper) to execute arbitrary Python code during unpickling.
Details
Picklescan fails to detect a malicious pickle that uses the gadget numpy.f2py.crackfortran._eval_length in __reduce__, allowing arbitrary command execution when the pickle is loaded. A crafted object returns this function plus attacker‑controlled arguments; the scan reports the file as safe, but pickle.load() triggers execution.
PoC
class PoC:
def __reduce__(self):
from numpy.f2py.crackfortran import _eval_length
return _eval_length, ("__import__('os').system('whoami')", None)
Impact
- Arbitrary code execution on the victim machine once they load the “scanned as safe” pickle / model file.
- Affects any workflow relying on Picklescan to vet untrusted pickle / PyTorch artifacts.
- Enables supply‑chain poisoning of shared model files.
Credits
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "picklescan"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.0.33"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-71339"
],
"database_specific": {
"cwe_ids": [
"CWE-502",
"CWE-94"
],
"github_reviewed": true,
"github_reviewed_at": "2025-12-30T15:20:14Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "### Summary\n\nPicklescan uses the `numpy.f2py.crackfortran._eval_length` function (a NumPy F2PY helper) to execute arbitrary Python code during unpickling.\n\n### Details\n\nPicklescan fails to detect a malicious pickle that uses the gadget `numpy.f2py.crackfortran._eval_length` in `__reduce__`, allowing arbitrary command execution when the pickle is loaded. A crafted object returns this function plus attacker\u2011controlled arguments; the scan reports the file as safe, but pickle.load() triggers execution.\n\n### PoC\n```python\nclass PoC:\n def __reduce__(self):\n from numpy.f2py.crackfortran import _eval_length\n return _eval_length, (\"__import__(\u0027os\u0027).system(\u0027whoami\u0027)\", None)\n```\n\n### Impact\n\n- Arbitrary code execution on the victim machine once they load the \u201cscanned as safe\u201d pickle / model file.\n- Affects any workflow relying on Picklescan to vet untrusted pickle / PyTorch artifacts.\n- Enables supply\u2011chain poisoning of shared model files.\n\n### Credits\n- [ac0d3r](https://github.com/ac0d3r)\n- [Tong Liu](https://lyutoon.github.io), Institute of information engineering, CAS",
"id": "GHSA-6556-fwc2-fg2p",
"modified": "2026-06-22T22:19:22Z",
"published": "2025-12-30T15:20:14Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/mmaitre314/picklescan/security/advisories/GHSA-6556-fwc2-fg2p"
},
{
"type": "WEB",
"url": "https://github.com/mmaitre314/picklescan/pull/53"
},
{
"type": "WEB",
"url": "https://github.com/mmaitre314/picklescan/commit/70c1c6c31beb6baaf52c8db1b6c3c0e84a6f9dab"
},
{
"type": "PACKAGE",
"url": "https://github.com/mmaitre314/picklescan"
},
{
"type": "WEB",
"url": "https://github.com/mmaitre314/picklescan/releases/tag/v0.0.33"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P",
"type": "CVSS_V4"
}
],
"summary": "Picklescan is vulnerable to RCE through missing detection when calling numpy.f2py.crackfortran._eval_length"
}
GHSA-656C-6CXF-HVCV
Vulnerability from github – Published: 2021-06-18 18:33 – Updated: 2022-09-20 13:31Flask-Cache adds easy cache support to Flask. The Flask-Caching extension through 1.10.1 for Flask relies on Pickle for serialization, which may lead to remote code execution or local privilege escalation. If an attacker gains access to cache storage (e.g., filesystem, Memcached, Redis, etc.), they can construct a crafted payload, poison the cache, and execute Python code.
However, this is not a high-severity issue, as for an attack like this to work, an attacker must:
- Be able to write arbitrary values to the cache
- Be able to generate a cache key that will collide with a value being read by the application
- Cause the application to read a maliciously-injected value
Any situation where all 3 of those is true is a situation where the application has larger problems; for example, if someone's able to inject malicious cached rendered pages into a Flask app's cache, then they can make the website say literally anything they want, regardless of whether it involves the execution of remote code. Basically, the Pickle vulnerability follows from a website already being extremely vulnerable (due to conditions 1 and 2 being met).
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "Flask-Caching"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "1.10.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-33026"
],
"database_specific": {
"cwe_ids": [
"CWE-269",
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-17T17:25:38Z",
"nvd_published_at": "2021-05-13T23:15:00Z",
"severity": "MODERATE"
},
"details": "Flask-Cache adds easy cache support to Flask. The Flask-Caching extension through 1.10.1 for Flask relies on Pickle for serialization, which may lead to remote code execution or local privilege escalation. If an attacker gains access to cache storage (e.g., filesystem, Memcached, Redis, etc.), they can construct a crafted payload, poison the cache, and execute Python code.\n\nHowever, this is not a high-severity issue, as for an attack like this to work, an attacker must:\n\n1. Be able to write arbitrary values to the cache\n2. Be able to generate a cache key that will collide with a value being read by the application\n3. Cause the application to read a maliciously-injected value\n\nAny situation where all 3 of those is true is a situation where the application has larger problems; for example, if someone\u0027s able to inject malicious cached rendered pages into a Flask app\u0027s cache, then they can make the website say literally anything they want, regardless of whether it involves the execution of remote code. Basically, the Pickle vulnerability follows from a website already being extremely vulnerable (due to conditions 1 and 2 being met).",
"id": "GHSA-656c-6cxf-hvcv",
"modified": "2022-09-20T13:31:06Z",
"published": "2021-06-18T18:33:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33026"
},
{
"type": "WEB",
"url": "https://github.com/pallets-eco/flask-caching/pull/209#issuecomment-1136397937"
},
{
"type": "WEB",
"url": "https://github.com/sh4nks/flask-caching/pull/209"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-656c-6cxf-hvcv"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/flask-caching/PYSEC-2021-13.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/sh4nks/flask-caching"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "Deserialization of Untrusted Data in Flask-Caching"
}
GHSA-658Q-F487-R8H7
Vulnerability from github – Published: 2025-02-19 18:32 – Updated: 2025-02-19 18:32IBM Cognos Controller 11.0.0 through 11.0.1 FP3 and IBM Controller 11.1.0
could allow an authenticated attacker to conduct formula injection. An attacker could execute arbitrary commands on the system, caused by improper validation of file contents.
{
"affected": [],
"aliases": [
"CVE-2024-45084"
],
"database_specific": {
"cwe_ids": [
"CWE-1236",
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-19T16:15:39Z",
"severity": "HIGH"
},
"details": "IBM Cognos Controller 11.0.0 through 11.0.1 FP3 and IBM Controller 11.1.0 \n\ncould allow an authenticated attacker to conduct formula injection. An attacker could execute arbitrary commands on the system, caused by improper validation of file contents.",
"id": "GHSA-658q-f487-r8h7",
"modified": "2025-02-19T18:32:23Z",
"published": "2025-02-19T18:32:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45084"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7183597"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-65J7-6H36-RJR5
Vulnerability from github – Published: 2022-05-24 16:57 – Updated: 2024-04-04 02:06In JobStore, there is a mismatched serialization/deserialization for the "battery-not-low" job attribute. This could lead to a local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Product: AndroidVersions: Android-10Android ID: A-130173029
{
"affected": [],
"aliases": [
"CVE-2019-9373"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-09-27T19:15:00Z",
"severity": "MODERATE"
},
"details": "In JobStore, there is a mismatched serialization/deserialization for the \"battery-not-low\" job attribute. This could lead to a local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Product: AndroidVersions: Android-10Android ID: A-130173029",
"id": "GHSA-65j7-6h36-rjr5",
"modified": "2024-04-04T02:06:00Z",
"published": "2022-05-24T16:57:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9373"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/android-10"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/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.