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.
5811 vulnerabilities reference this CWE, most recent first.
GHSA-RJW8-72RG-98G5
Vulnerability from github – Published: 2025-08-12 18:31 – Updated: 2025-08-12 18:31Deserialization of untrusted data in Web Deploy allows an authorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-53772"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-12T18:15:45Z",
"severity": "HIGH"
},
"details": "Deserialization of untrusted data in Web Deploy allows an authorized attacker to execute code over a network.",
"id": "GHSA-rjw8-72rg-98g5",
"modified": "2025-08-12T18:31:33Z",
"published": "2025-08-12T18:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53772"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53772"
}
],
"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-RM2P-P3W4-CCQM
Vulnerability from github – Published: 2026-10-19 12:32 – Updated: 2026-10-19 12:32Deserialization of Untrusted Data vulnerability in ExpressTech Quiz And Survey Master quiz-master-next allows Object Injection.This issue affects Quiz And Survey Master: from n/a through 11.2.7.
{
"affected": [],
"aliases": [
"CVE-2026-111408"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-19T10:16:46Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in ExpressTech Quiz And Survey Master quiz-master-next allows Object Injection.This issue affects Quiz And Survey Master: from n/a through 11.2.7.",
"id": "GHSA-rm2p-p3w4-ccqm",
"modified": "2026-10-19T12:32:47Z",
"published": "2026-10-19T12:32:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111408"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/quiz-master-next/vulnerability/wordpress-quiz-and-survey-master-plugin-11-2-7-php-object-injection-vulnerability-2?_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-RM37-V7MC-6795
Vulnerability from github – Published: 2026-08-05 15:32 – Updated: 2026-08-10 12:31Cotonti CMS's Comments plugin deserializes user-supplied data without restricting the classes that may be instantiated. In plugins/comments/controllers/actions/CreateAction.php, a ci POST parameter obtained via cot_import('ci', 'P', 'TXT') (trim-only sanitization) is passed to unserialize(base64_decode($ci)) with no allowed_classes restriction, reachable by any member with write access to comments (the default Auth_members => 'RW' setting in plugins/comments/comments.setup.php). In plugins/comments/controllers/actions/EditAction.php, a cb parameter is similarly deserialized via unserialize(base64_decode($this->comeback)) in prepareComeBack(), reachable by any member editing their own comment. Because unserialize() is called without allowed_classes, an attacker can construct a serialized PHP object of any class loaded by Cotonti (a PHP Object Injection primitive). This was demonstrated in practice using Cotonti's own MySQL_cache class: a crafted serialized MySQL_cache object, once deserialized and later garbage-collected, triggers its __destruct()->flush() chain, causing an attacker-controlled INSERT INTO cot_cache with attacker-chosen row values — confirming genuine POP-chain exploitation, with further impact (including potential RCE) contingent on other gadget chains available in a given Cotonti installation's loaded classes. A third sink in DeleteAction.php contains the identical unserialize() pattern but is gated behind an admin-only authorization check and is not reachable by ordinary members.
{
"affected": [],
"aliases": [
"CVE-2026-71294"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-05T13:24:54Z",
"severity": "HIGH"
},
"details": "Cotonti CMS\u0027s Comments plugin deserializes user-supplied data without restricting the classes that may be instantiated. In plugins/comments/controllers/actions/CreateAction.php, a `ci` POST parameter obtained via `cot_import(\u0027ci\u0027, \u0027P\u0027, \u0027TXT\u0027)` (trim-only sanitization) is passed to `unserialize(base64_decode($ci))` with no `allowed_classes` restriction, reachable by any member with write access to comments (the default `Auth_members =\u003e \u0027RW\u0027` setting in plugins/comments/comments.setup.php). In plugins/comments/controllers/actions/EditAction.php, a `cb` parameter is similarly deserialized via `unserialize(base64_decode($this-\u003ecomeback))` in prepareComeBack(), reachable by any member editing their own comment. Because unserialize() is called without allowed_classes, an attacker can construct a serialized PHP object of any class loaded by Cotonti (a PHP Object Injection primitive). This was demonstrated in practice using Cotonti\u0027s own MySQL_cache class: a crafted serialized MySQL_cache object, once deserialized and later garbage-collected, triggers its __destruct()-\u003eflush() chain, causing an attacker-controlled INSERT INTO cot_cache with attacker-chosen row values \u2014 confirming genuine POP-chain exploitation, with further impact (including potential RCE) contingent on other gadget chains available in a given Cotonti installation\u0027s loaded classes. A third sink in DeleteAction.php contains the identical unserialize() pattern but is gated behind an admin-only authorization check and is not reachable by ordinary members.",
"id": "GHSA-rm37-v7mc-6795",
"modified": "2026-08-10T12:31:50Z",
"published": "2026-08-05T15:32:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71294"
},
{
"type": "WEB",
"url": "https://github.com/Cotonti/Cotonti"
},
{
"type": "WEB",
"url": "https://github.com/Cotonti/Cotonti/blob/master/plugins/comments/controllers/actions/CreateAction.php"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-RM3V-36X6-MR48
Vulnerability from github – Published: 2026-08-12 15:30 – Updated: 2026-08-12 15:30A party with write access to stored session data may affect JFrog Artifactory under specific conditions.
{
"affected": [],
"aliases": [
"CVE-2026-68756"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-12T15:18:22Z",
"severity": "MODERATE"
},
"details": "A party with write access to stored session data may affect JFrog Artifactory under specific conditions.",
"id": "GHSA-rm3v-36x6-mr48",
"modified": "2026-08-12T15:30:49Z",
"published": "2026-08-12T15:30:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68756"
},
{
"type": "WEB",
"url": "https://docs.jfrog.com/releases/docs/artifactory-self-managed-releases"
},
{
"type": "WEB",
"url": "https://docs.jfrog.com/releases/docs/jfrog-security-advisories"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-RM4X-2M9V-7Q8H
Vulnerability from github – Published: 2022-05-13 01:17 – Updated: 2022-05-13 01:17Adobe ColdFusion versions July 12 release (2018.0.0.310739), Update 6 and earlier, and Update 14 and earlier have a deserialization of untrusted data vulnerability. Successful exploitation could lead to arbitrary code execution.
{
"affected": [],
"aliases": [
"CVE-2018-15959"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-09-25T13:29:00Z",
"severity": "CRITICAL"
},
"details": "Adobe ColdFusion versions July 12 release (2018.0.0.310739), Update 6 and earlier, and Update 14 and earlier have a deserialization of untrusted data vulnerability. Successful exploitation could lead to arbitrary code execution.",
"id": "GHSA-rm4x-2m9v-7q8h",
"modified": "2022-05-13T01:17:37Z",
"published": "2022-05-13T01:17:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15959"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/coldfusion/apsb18-33.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/105313"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041621"
}
],
"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-RM66-H7V3-77RX
Vulnerability from github – Published: 2026-08-25 12:31 – Updated: 2026-08-25 12:31The Kalles Addons plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.6 via deserialization of untrusted input. 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-2026-78572"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-25T10:18:13Z",
"severity": "HIGH"
},
"details": "The Kalles Addons plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.6 via deserialization of untrusted input. 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-rm66-h7v3-77rx",
"modified": "2026-08-25T12:31:22Z",
"published": "2026-08-25T12:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78572"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/kalles-addons/vulnerability/wordpress-kalles-addons-plugin-1-0-6-php-object-injection-vulnerability"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/46474bf6-0906-4b94-8032-270991c5128d?source=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-RMFJ-5M74-5RG4
Vulnerability from github – Published: 2024-05-14 18:30 – Updated: 2024-05-14 18:30The Hotel Booking Lite plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.11.1 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
{
"affected": [],
"aliases": [
"CVE-2024-4413"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T15:43:36Z",
"severity": "CRITICAL"
},
"details": "The Hotel Booking Lite plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.11.1 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.",
"id": "GHSA-rmfj-5m74-5rg4",
"modified": "2024-05-14T18:30:55Z",
"published": "2024-05-14T18:30:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4413"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/motopress-hotel-booking-lite/trunk/includes/shortcodes/checkout-shortcode/step-checkout.php#L149"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026new=3084187%40motopress-hotel-booking-lite%2Ftrunk\u0026old=3081058%40motopress-hotel-booking-lite%2Ftrunk\u0026sfp_email=\u0026sfph_mail="
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/1d7f1283-a274-49a2-8bec-da178771b13a?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-RMG8-QPVH-WHHG
Vulnerability from github – Published: 2022-05-24 17:42 – Updated: 2022-05-24 17:42The specific function of HR Portal of Soar Cloud System accepts any type of object to be deserialized. Attackers can send malicious serialized objects to execute arbitrary commands.
{
"affected": [],
"aliases": [
"CVE-2021-22855"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-17T14:15:00Z",
"severity": "CRITICAL"
},
"details": "The specific function of HR Portal of Soar Cloud System accepts any type of object to be deserialized. Attackers can send malicious serialized objects to execute arbitrary commands.",
"id": "GHSA-rmg8-qpvh-whhg",
"modified": "2022-05-24T17:42:32Z",
"published": "2022-05-24T17:42:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22855"
},
{
"type": "WEB",
"url": "https://www.chtsecurity.com/news/d334641f-2b28-4eab-a5ed-c6ec6740557e"
},
{
"type": "WEB",
"url": "https://www.twcert.org.tw/tw/cp-132-4405-2ddde-1.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-RMHF-57RF-F2P9
Vulnerability from github – Published: 2022-11-01 12:00 – Updated: 2022-11-02 19:00Delta Electronics InfraSuite Device Master versions 00.00.01a and prior deserialize user-supplied data provided through the Device-Gateway service port without proper verification. An attacker could provide malicious serialized objects to execute arbitrary code upon deserialization.
{
"affected": [],
"aliases": [
"CVE-2022-38142"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-10-31T20:15:00Z",
"severity": "CRITICAL"
},
"details": "Delta Electronics InfraSuite Device Master versions 00.00.01a and prior deserialize user-supplied data provided through the Device-Gateway service port without proper verification. An attacker could provide malicious serialized objects to execute arbitrary code upon deserialization.",
"id": "GHSA-rmhf-57rf-f2p9",
"modified": "2022-11-02T19:00:32Z",
"published": "2022-11-01T12:00:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-38142"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-298-07"
}
],
"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-RMJR-P44G-H485
Vulnerability from github – Published: 2025-12-18 09:30 – Updated: 2026-01-20 15:32Deserialization of Untrusted Data vulnerability in BoldGrid Client Invoicing by Sprout Invoices sprout-invoices allows Object Injection.This issue affects Client Invoicing by Sprout Invoices: from n/a through <= 20.8.7.
{
"affected": [],
"aliases": [
"CVE-2025-64227"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-18T08:16:12Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in BoldGrid Client Invoicing by Sprout Invoices sprout-invoices allows Object Injection.This issue affects Client Invoicing by Sprout Invoices: from n/a through \u003c= 20.8.7.",
"id": "GHSA-rmjr-p44g-h485",
"modified": "2026-01-20T15:32:31Z",
"published": "2025-12-18T09:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64227"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Plugin/sprout-invoices/vulnerability/wordpress-client-invoicing-by-sprout-invoices-plugin-20-8-7-php-object-injection-vulnerability?_s_id=cve"
},
{
"type": "WEB",
"url": "https://vdp.patchstack.com/database/Wordpress/Plugin/sprout-invoices/vulnerability/wordpress-client-invoicing-by-sprout-invoices-plugin-20-8-7-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"
}
]
}
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.