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.
4834 vulnerabilities reference this CWE, most recent first.
GHSA-GFHP-JGP6-838J
Vulnerability from github – Published: 2022-09-30 04:54 – Updated: 2022-11-01 12:56Impact
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. Authentication is required to exploit this vulnerability. The authenticated user may perform the actions unknowingly by visiting a specially crafted site.
Patches
Patched in C1 CMS v6.13
Workarounds
Upgrade to C1 CMS v6.13 or newer is required
Credit
This issue was discovered and reported by Markus Wulftange / Code White GmbH.
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "CompositeC1.Core"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.13"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-39256"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2022-09-30T04:54:06Z",
"nvd_published_at": "2022-09-27T15:15:00Z",
"severity": "CRITICAL"
},
"details": "### Impact\n\nThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Orckestra C1 CMS. \nAuthentication is required to exploit this vulnerability.\nThe authenticated user may perform the actions unknowingly by visiting a specially crafted site.\n\n### Patches\nPatched in C1 CMS v6.13\n\n### Workarounds\nUpgrade to C1 CMS v6.13 or newer is required\n\n### Credit\nThis issue was discovered and reported by Markus Wulftange / [Code White GmbH](https://code-white.com/en/).\n",
"id": "GHSA-gfhp-jgp6-838j",
"modified": "2022-11-01T12:56:34Z",
"published": "2022-09-30T04:54:06Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/Orckestra/C1-CMS-Foundation/security/advisories/GHSA-gfhp-jgp6-838j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39256"
},
{
"type": "WEB",
"url": "https://github.com/Orckestra/C1-CMS-Foundation/pull/814"
},
{
"type": "WEB",
"url": "https://github.com/Orckestra/C1-CMS-Foundation/commit/af856ab5a62d19acf6aea1b1f4c6c3c4985c9446"
},
{
"type": "PACKAGE",
"url": "https://github.com/Orckestra/C1-CMS-Foundation"
},
{
"type": "WEB",
"url": "https://github.com/Orckestra/C1-CMS-Foundation/releases/tag/v6.13"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Orckestra C1 CMS\u0027s deserialization of untrusted data allows for arbitrary code execution."
}
GHSA-GFVX-3CF3-5X6X
Vulnerability from github – Published: 2026-02-24 18:31 – Updated: 2026-02-27 21:31Altec DocLink (now maintained by Beyond Limits Inc.) version 4.0.336.0 exposes insecure .NET Remoting endpoints over TCP and HTTP/SOAP via Altec.RDCHostService.exe using the ObjectURI "doclinkServer.soap". The service does not require authentication and is vulnerable to unsafe object unmarshalling, allowing remote attackers to read arbitrary files from the underlying system by specifying local file paths. Additionally, attackers can coerce SMB authentication via UNC paths and write arbitrary files to server locations. Because writable paths may be web-accessible under IIS, this can result in unauthenticated remote code execution or denial of service through file overwrite.
{
"affected": [],
"aliases": [
"CVE-2026-26222"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-24T18:29:33Z",
"severity": "CRITICAL"
},
"details": "Altec DocLink (now maintained by Beyond Limits Inc.) version 4.0.336.0 exposes insecure .NET Remoting endpoints over TCP and HTTP/SOAP via Altec.RDCHostService.exe using the ObjectURI \"doclinkServer.soap\". The service does not require authentication and is vulnerable to unsafe object unmarshalling, allowing remote attackers to read arbitrary files from the underlying system by specifying local file paths. Additionally, attackers can coerce SMB authentication via UNC paths and write arbitrary files to server locations. Because writable paths may be web-accessible under IIS, this can result in unauthenticated remote code execution or denial of service through file overwrite.",
"id": "GHSA-gfvx-3cf3-5x6x",
"modified": "2026-02-27T21:31:19Z",
"published": "2026-02-24T18:31:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26222"
},
{
"type": "WEB",
"url": "https://doclinkai.com"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/doclink-net-remoting-unauthenticated-arbitrary-file-read-write-rce"
}
],
"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:H/SI:H/SA:H/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-GG4R-CHQJ-W6MP
Vulnerability from github – Published: 2026-03-05 06:30 – Updated: 2026-03-09 21:31Deserialization of Untrusted Data vulnerability in ThemeREX Equestrian Centre equestrian-centre allows Object Injection.This issue affects Equestrian Centre: from n/a through <= 1.5.
{
"affected": [],
"aliases": [
"CVE-2026-22474"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-05T06:16:21Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in ThemeREX Equestrian Centre equestrian-centre allows Object Injection.This issue affects Equestrian Centre: from n/a through \u003c= 1.5.",
"id": "GHSA-gg4r-chqj-w6mp",
"modified": "2026-03-09T21:31:33Z",
"published": "2026-03-05T06:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22474"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Theme/equestrian-centre/vulnerability/wordpress-equestrian-centre-theme-1-5-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-GG69-9WWP-6JX2
Vulnerability from github – Published: 2026-06-10 00:31 – Updated: 2026-06-10 00:31JsonPulsarHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Additionally, an empty trusted-packages configuration fell back to trusting all packages rather than applying a safe default allow-list.
Affected versions: Spring for Apache Pulsar 2.0.0 through 2.0.5; 1.2.0 through 1.2.17; 1.1.0 through 1.1.17.
{
"affected": [],
"aliases": [
"CVE-2026-41732"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-10T00:16:52Z",
"severity": "HIGH"
},
"details": "JsonPulsarHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Additionally, an empty trusted-packages configuration fell back to trusting all packages rather than applying a safe default allow-list.\n\nAffected versions:\nSpring for Apache Pulsar 2.0.0 through 2.0.5; 1.2.0 through 1.2.17; 1.1.0 through 1.1.17.",
"id": "GHSA-gg69-9wwp-6jx2",
"modified": "2026-06-10T00:31:52Z",
"published": "2026-06-10T00:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41732"
},
{
"type": "WEB",
"url": "https://spring.io/security/cve-2026-41732"
}
],
"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-GG9M-2J95-F3P4
Vulnerability from github – Published: 2026-06-26 15:32 – Updated: 2026-06-26 15:32Subscriber PHP Object Injection in RealHomes <= 4.5.3 versions.
{
"affected": [],
"aliases": [
"CVE-2026-56055"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-26T15:16:44Z",
"severity": "HIGH"
},
"details": "Subscriber PHP Object Injection in RealHomes \u003c= 4.5.3 versions.",
"id": "GHSA-gg9m-2j95-f3p4",
"modified": "2026-06-26T15:32:16Z",
"published": "2026-06-26T15:32:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56055"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/realhomes/vulnerability/wordpress-realhomes-theme-4-5-3-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-GG9M-FJ3V-R58C
Vulnerability from github – Published: 2018-10-16 19:37 – Updated: 2025-10-22 17:31The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.struts:struts2-rest-plugin"
},
"ranges": [
{
"events": [
{
"introduced": "2.1.1"
},
{
"fixed": "2.3.34"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.struts:struts2-rest-plugin"
},
"ranges": [
{
"events": [
{
"introduced": "2.5.0"
},
{
"fixed": "2.5.13"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2017-9805"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:37:16Z",
"nvd_published_at": "2017-09-15T19:29:00Z",
"severity": "HIGH"
},
"details": "The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.",
"id": "GHSA-gg9m-fj3v-r58c",
"modified": "2025-10-22T17:31:31Z",
"published": "2018-10-16T19:37:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9805"
},
{
"type": "WEB",
"url": "https://github.com/apache/struts/commit/19494718865f2fb7da5ea363de3822f87fbda26"
},
{
"type": "WEB",
"url": "https://github.com/apache/struts/commit/6dd6e5cfb7b5e020abffe7e8091bd63fe97c10a"
},
{
"type": "WEB",
"url": "https://blogs.apache.org/foundation/entry/apache-struts-statement-on-equifax"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1488482"
},
{
"type": "WEB",
"url": "https://cwiki.apache.org/confluence/display/WW/S2-052"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/struts"
},
{
"type": "WEB",
"url": "https://lgtm.com/blog/apache_struts_CVE-2017-9805"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20170907-0001"
},
{
"type": "WEB",
"url": "https://struts.apache.org/docs/s2-052.html"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20170909031344/http://www.securityfocus.com/bid/100609"
},
{
"type": "WEB",
"url": "https://web.archive.org/web/20170922053119/http://www.securitytracker.com/id/1039263"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9805"
},
{
"type": "WEB",
"url": "https://www.exploit-db.com/exploits/42627"
},
{
"type": "WEB",
"url": "https://www.kb.cert.org/vuls/id/112992"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/100609"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1039263"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H",
"type": "CVSS_V3"
}
],
"summary": "REST Plugin in Apache Struts uses an XStreamHandler with an instance of XStream for deserialization without any type filtering"
}
GHSA-GGCF-5RRX-7333
Vulnerability from github – Published: 2024-12-13 15:30 – Updated: 2026-04-01 18:32Deserialization of Untrusted Data vulnerability in PickPlugins Mail Picker allows Object Injection.This issue affects Mail Picker: from n/a through 1.0.14.
{
"affected": [],
"aliases": [
"CVE-2024-54273"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-13T15:15:31Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in PickPlugins Mail Picker allows Object Injection.This issue affects Mail Picker: from n/a through 1.0.14.",
"id": "GHSA-ggcf-5rrx-7333",
"modified": "2026-04-01T18:32:43Z",
"published": "2024-12-13T15:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-54273"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/mail-picker/vulnerability/wordpress-mail-picker-plugin-1-0-14-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-GGFF-9MJ3-7246
Vulnerability from github – Published: 2026-01-21 15:47 – Updated: 2026-01-22 15:52Description
The extension extends TYPO3’s FileSpool component, which was vulnerable to Insecure Deserialization prior to TYPO3-CORE-SA-2026-004. Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension.
More information about this vulnerability can be found in the related TYPO3 Core Security Advisory TYPO3-CORE-SA-2026-004.
References
- TYPO3-EXT-SA-2026-001
- https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db
- https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "cpsit/typo3-mailqueue"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.4.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "cpsit/typo3-mailqueue"
},
"ranges": [
{
"events": [
{
"introduced": "0.5.0"
},
{
"fixed": "0.5.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-0895"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-01-21T15:47:44Z",
"nvd_published_at": "2026-01-20T08:16:01Z",
"severity": "MODERATE"
},
"details": "## Description\n\nThe extension extends TYPO3\u2019s FileSpool component, which was vulnerable to Insecure Deserialization prior to [TYPO3-CORE-SA-2026-004](https://typo3.org/security/advisory/typo3-core-sa-2026-004). Since the related fix is overwritten by the extension, using the extension with a patched TYPO3 core version still allows for Insecure Deserialization, because the affected vulnerable code was extracted from TYPO3 core to the extension.\n\nMore information about this vulnerability can be found in the related TYPO3 Core Security Advisory [TYPO3-CORE-SA-2026-004](https://typo3.org/security/advisory/typo3-core-sa-2026-004).\n\n## References\n\n* [TYPO3-EXT-SA-2026-001](https://typo3.org/security/advisory/typo3-ext-sa-2026-001)\n* https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db\n* https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733",
"id": "GHSA-ggff-9mj3-7246",
"modified": "2026-01-22T15:52:09Z",
"published": "2026-01-21T15:47:44Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/CPS-IT/mailqueue/security/advisories/GHSA-ggff-9mj3-7246"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0895"
},
{
"type": "WEB",
"url": "https://github.com/CPS-IT/mailqueue/commit/12a0a35027bb5609917790a94e43bbf117abf733"
},
{
"type": "WEB",
"url": "https://github.com/CPS-IT/mailqueue/commit/fd09aa4e1a751551bae4b228bee814e22f2048db"
},
{
"type": "PACKAGE",
"url": "https://github.com/CPS-IT/mailqueue"
},
{
"type": "WEB",
"url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-001"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
}
],
"summary": "mailqueue TYPO3 extension affected by Insecure Deserialization in QueueableFileTransport"
}
GHSA-GGRJ-HRPF-2QJW
Vulnerability from github – Published: 2025-10-22 15:31 – Updated: 2026-01-20 15:31Deserialization of Untrusted Data vulnerability in designthemes Single Property single-property allows Object Injection.This issue affects Single Property: from n/a through <= 2.8.
{
"affected": [],
"aliases": [
"CVE-2025-60234"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-22T15:16:00Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in designthemes Single Property single-property allows Object Injection.This issue affects Single Property: from n/a through \u003c= 2.8.",
"id": "GHSA-ggrj-hrpf-2qjw",
"modified": "2026-01-20T15:31:31Z",
"published": "2025-10-22T15:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60234"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Theme/single-property/vulnerability/wordpress-single-property-theme-2-8-php-object-injection-vulnerability?_s_id=cve"
},
{
"type": "WEB",
"url": "https://vdp.patchstack.com/database/Wordpress/Theme/single-property/vulnerability/wordpress-single-property-theme-2-8-php-object-injection-vulnerability"
},
{
"type": "WEB",
"url": "https://vdp.patchstack.com/database/Wordpress/Theme/single-property/vulnerability/wordpress-single-property-theme-2-8-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-GGW3-FHV7-GRW9
Vulnerability from github – Published: 2026-02-19 18:31 – Updated: 2026-02-24 21:31Deserialization of Untrusted Data vulnerability in Brainstorm Force CartFlows cartflows allows Object Injection.This issue affects CartFlows: from n/a through <= 2.1.19.
{
"affected": [],
"aliases": [
"CVE-2026-25316"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-19T09:16:15Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in Brainstorm Force CartFlows cartflows allows Object Injection.This issue affects CartFlows: from n/a through \u003c= 2.1.19.",
"id": "GHSA-ggw3-fhv7-grw9",
"modified": "2026-02-24T21:31:32Z",
"published": "2026-02-19T18:31:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25316"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Plugin/cartflows/vulnerability/wordpress-cartflows-plugin-2-1-19-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"
}
]
}
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.