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-GH2W-WQM3-32M4
Vulnerability from github – Published: 2022-05-24 17:21 – Updated: 2024-03-21 03:33compose.php in SquirrelMail 1.4.22 calls unserialize for the $attachments value, which originates from an HTTP POST request.
{
"affected": [],
"aliases": [
"CVE-2020-14933"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-06-20T13:15:00Z",
"severity": "HIGH"
},
"details": "compose.php in SquirrelMail 1.4.22 calls unserialize for the $attachments value, which originates from an HTTP POST request.",
"id": "GHSA-gh2w-wqm3-32m4",
"modified": "2024-03-21T03:33:55Z",
"published": "2022-05-24T17:21:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-14933"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2020/06/20/1"
}
],
"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-GH6Q-WRFG-C8WF
Vulnerability from github – Published: 2022-05-24 17:19 – Updated: 2023-03-03 03:30The affected product is vulnerable to the handling of serialized data. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data on the Ignition 8 Gateway (versions prior to 8.0.10), allowing an attacker to obtain sensitive information.
{
"affected": [],
"aliases": [
"CVE-2020-12000"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-06-09T18:15:00Z",
"severity": "MODERATE"
},
"details": "The affected product is vulnerable to the handling of serialized data. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data on the Ignition 8 Gateway (versions prior to 8.0.10), allowing an attacker to obtain sensitive information.",
"id": "GHSA-gh6q-wrfg-c8wf",
"modified": "2023-03-03T03:30:23Z",
"published": "2022-05-24T17:19:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12000"
},
{
"type": "WEB",
"url": "https://www.us-cert.gov/ics/advisories/icsa-20-147-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-GHCJ-P98X-79P3
Vulnerability from github – Published: 2024-01-08 21:30 – Updated: 2026-04-28 21:33Deserialization of Untrusted Data vulnerability in SVNLabs Softwares HTML5 MP3 Player with Folder Feedburner Playlist Free.This issue affects HTML5 MP3 Player with Folder Feedburner Playlist Free: from n/a through 2.8.0.
{
"affected": [],
"aliases": [
"CVE-2023-52202"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-08T21:15:10Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in SVNLabs Softwares HTML5 MP3 Player with Folder Feedburner Playlist Free.This issue affects HTML5 MP3 Player with Folder Feedburner Playlist Free: from n/a through 2.8.0.",
"id": "GHSA-ghcj-p98x-79p3",
"modified": "2026-04-28T21:33:47Z",
"published": "2024-01-08T21:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52202"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/vulnerability/html5-mp3-player-with-mp3-folder-feedburner-playlist/wordpress-html5-mp3-player-with-folder-feedburner-plugin-2-8-0-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:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GHFC-35GQ-CJ3P
Vulnerability from github – Published: 2025-07-20 09:32 – Updated: 2026-04-29 04:11A vulnerability classified as critical was found in Metasoft 美特软件 MetaCRM up to 6.4.2. This vulnerability affects the function AnalyzeParam of the file download.jsp. The manipulation of the argument p leads to deserialization. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2025-7876"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-20T08:15:23Z",
"severity": "MODERATE"
},
"details": "A vulnerability classified as critical was found in Metasoft \u7f8e\u7279\u8f6f\u4ef6 MetaCRM up to 6.4.2. This vulnerability affects the function AnalyzeParam of the file download.jsp. The manipulation of the argument p leads to deserialization. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-ghfc-35gq-cj3p",
"modified": "2026-04-29T04:11:28Z",
"published": "2025-07-20T09:32:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-7876"
},
{
"type": "WEB",
"url": "https://github.com/FightingLzn9/vul/blob/main/MetaCRM6-RCE-3.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.316990"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.316990"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.611048"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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-GHG7-3QR4-CJR3
Vulnerability from github – Published: 2026-03-05 06:30 – Updated: 2026-03-05 18:31Deserialization of Untrusted Data vulnerability in ThemeREX Classter classter allows Object Injection.This issue affects Classter: from n/a through <= 2.5.
{
"affected": [],
"aliases": [
"CVE-2025-54001"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-05T06:16:11Z",
"severity": "CRITICAL"
},
"details": "Deserialization of Untrusted Data vulnerability in ThemeREX Classter classter allows Object Injection.This issue affects Classter: from n/a through \u003c= 2.5.",
"id": "GHSA-ghg7-3qr4-cjr3",
"modified": "2026-03-05T18:31:36Z",
"published": "2026-03-05T06:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54001"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Theme/classter/vulnerability/wordpress-classter-theme-2-5-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-GHV6-9R9J-WH4J
Vulnerability from github – Published: 2024-06-04 12:31 – Updated: 2024-06-21 14:25Deserialization of untrusted data can occur in versions of the MLflow platform running version 0.9.0 or newer, enabling a maliciously uploaded PyFunc model to run arbitrary code on an end user’s system when interacted with.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "mlflow"
},
"ranges": [
{
"events": [
{
"introduced": "0.9.0"
},
{
"last_affected": "2.14.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-37054"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2024-06-05T13:17:58Z",
"nvd_published_at": "2024-06-04T12:15:11Z",
"severity": "HIGH"
},
"details": "Deserialization of untrusted data can occur in versions of the MLflow platform running version 0.9.0 or newer, enabling a maliciously uploaded PyFunc model to run arbitrary code on an end user\u2019s system when interacted with.",
"id": "GHSA-ghv6-9r9j-wh4j",
"modified": "2024-06-21T14:25:31Z",
"published": "2024-06-04T12:31:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37054"
},
{
"type": "PACKAGE",
"url": "https://github.com/mlflow/mlflow"
},
{
"type": "WEB",
"url": "https://hiddenlayer.com/sai-security-advisory/mlflow-june2024"
}
],
"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"
}
],
"summary": "MLFlow unsafe deserialization"
}
GHSA-GHWH-G7J6-QHX5
Vulnerability from github – Published: 2022-05-14 03:42 – Updated: 2022-05-14 03:42A Deserialization of Untrusted Data vulnerability in Hewlett Packard Enterprise Intelligent Management Center (iMC) PLAT version 7.3 E0504P2 was found.
{
"affected": [],
"aliases": [
"CVE-2017-8967"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-02-15T22:29:00Z",
"severity": "HIGH"
},
"details": "A Deserialization of Untrusted Data vulnerability in Hewlett Packard Enterprise Intelligent Management Center (iMC) PLAT version 7.3 E0504P2 was found.",
"id": "GHSA-ghwh-g7j6-qhx5",
"modified": "2022-05-14T03:42:42Z",
"published": "2022-05-14T03:42:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-8967"
},
{
"type": "WEB",
"url": "https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-hpesbhf03787en_us"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1039684"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GJ26-W59C-29MF
Vulnerability from github – Published: 2026-03-04 03:31 – Updated: 2026-03-04 21:32Concrete CMS below version 9.4.8 is vulnerable to Remote Code Execution by stored PHP object injection into the Express Entry List block via the columns parameter. An authenticated administrator can store attacker-controlled serialized data in block configuration fields that are later passed to unserialize() without class restrictions or integrity checks.
The Concrete CMS security team thanks YJK ( @YJK0805 https://hackerone.com/yjk0805 ) of ZUSO ART https://zuso.ai/ for reporting.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "concrete5/concrete5"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.4.8"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-3452"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-04T21:32:21Z",
"nvd_published_at": "2026-03-04T02:15:54Z",
"severity": "HIGH"
},
"details": "Concrete CMS below version 9.4.8 is vulnerable to\u00a0Remote Code Execution by\u00a0stored PHP object injection into the Express Entry List block\u00a0via the columns parameter.\u00a0An authenticated administrator can store attacker-controlled serialized data in block configuration fields that are later passed to unserialize() without class restrictions or integrity checks.\u00a0\n\nThe Concrete CMS security team thanks\u00a0YJK ( @YJK0805 https://hackerone.com/yjk0805 ) of ZUSO ART https://zuso.ai/ \u00a0for reporting.",
"id": "GHSA-gj26-w59c-29mf",
"modified": "2026-03-04T21:32:21Z",
"published": "2026-03-04T03:31:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3452"
},
{
"type": "WEB",
"url": "https://github.com/concretecms/concretecms/pull/12826/changes/167f16e4805d8ab546d2997c753ac21bf4854920"
},
{
"type": "WEB",
"url": "https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes"
},
{
"type": "PACKAGE",
"url": "https://github.com/concretecms/concretecms"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
}
],
"summary": "Concrete CMS vulnerable to\u00a0Remote Code Execution by\u00a0stored PHP object injection"
}
GHSA-GJ76-429M-56WC
Vulnerability from github – Published: 2020-02-04 22:38 – Updated: 2021-08-19 16:54Apache Olingo versions 4.0.0 to 4.6.0 provide the AbstractService class, which is public API, uses ObjectInputStream and doesn't check classes being deserialized. If an attacker can feed malicious metadata to the class, then it may result in running attacker's code in the worse case.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.6.0"
},
"package": {
"ecosystem": "Maven",
"name": "org.apache.olingo:odata-client-proxy"
},
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.7.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-17556"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2020-02-04T22:35:09Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "Apache Olingo versions 4.0.0 to 4.6.0 provide the AbstractService class, which is public API, uses ObjectInputStream and doesn\u0027t check classes being deserialized. If an attacker can feed malicious metadata to the class, then it may result in running attacker\u0027s code in the worse case.",
"id": "GHSA-gj76-429m-56wc",
"modified": "2021-08-19T16:54:03Z",
"published": "2020-02-04T22:38:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-17556"
},
{
"type": "WEB",
"url": "https://github.com/apache/olingo-odata4/pull/60/files"
},
{
"type": "WEB",
"url": "https://issues.apache.org/jira/browse/OLINGO-1410"
},
{
"type": "WEB",
"url": "https://mail-archives.apache.org/mod_mbox/olingo-user/201912.mbox/%3CCAGSZ4d4vbSYaVh3aUWAvcVHK2qcFxxCZd3WAx3xbwZXskPX8nw%40mail.gmail.com%3E"
}
],
"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": "Deserialization of Untrusted Data in Apache Olingo"
}
GHSA-GJJQ-PMJ5-XFHW
Vulnerability from github – Published: 2025-10-22 15:31 – Updated: 2026-01-20 15:31Deserialization of Untrusted Data vulnerability in acowebs Product Table For WooCommerce product-table-for-woocommerce.This issue affects Product Table For WooCommerce: from n/a through <= 1.2.4.
{
"affected": [],
"aliases": [
"CVE-2025-62008"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-22T15:16:02Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in acowebs Product Table For WooCommerce product-table-for-woocommerce.This issue affects Product Table For WooCommerce: from n/a through \u003c= 1.2.4.",
"id": "GHSA-gjjq-pmj5-xfhw",
"modified": "2026-01-20T15:31:32Z",
"published": "2025-10-22T15:31:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62008"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Plugin/product-table-for-woocommerce/vulnerability/wordpress-product-table-for-woocommerce-plugin-1-2-4-php-object-injection-vulnerability?_s_id=cve"
},
{
"type": "WEB",
"url": "https://vdp.patchstack.com/database/Wordpress/Plugin/product-table-for-woocommerce/vulnerability/wordpress-product-table-for-woocommerce-plugin-1-2-4-php-object-injection-vulnerability"
},
{
"type": "WEB",
"url": "https://vdp.patchstack.com/database/Wordpress/Plugin/product-table-for-woocommerce/vulnerability/wordpress-product-table-for-woocommerce-plugin-1-2-4-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"
}
]
}
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.