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.
4801 vulnerabilities reference this CWE, most recent first.
GHSA-8V4P-4WRW-V43W
Vulnerability from github – Published: 2026-02-11 15:30 – Updated: 2026-02-11 15:30The wpForo Forum plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.4.13 via deserialization of untrusted input in the 'wpforo_display_array_data' function. This makes it possible for authenticated attackers, with Subscriber-level access and above, 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-2026-0910"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-11T14:16:01Z",
"severity": "HIGH"
},
"details": "The wpForo Forum plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.4.13 via deserialization of untrusted input in the \u0027wpforo_display_array_data\u0027 function. This makes it possible for authenticated attackers, with Subscriber-level access and above, 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-8v4p-4wrw-v43w",
"modified": "2026-02-11T15:30:27Z",
"published": "2026-02-11T15:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0910"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/wpforo/tags/2.4.13/admin/tools-tabs/debug.php#L198"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset?old=3416158\u0026old_path=wpforo%2Ftags%2F2.4.13%2Fadmin%2Ftools-tabs%2Fdebug.php\u0026new=3446993\u0026new_path=wpforo%2Ftags%2F2.4.14%2Fadmin%2Ftools-tabs%2Fdebug.php"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3c833223-c8c9-413f-9d72-6fb13101459b?source=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-8V6M-WM8J-QPV7
Vulnerability from github – Published: 2025-04-03 15:31 – Updated: 2026-04-01 18:34Deserialization of Untrusted Data vulnerability in PickPlugins Testimonial Slider allows Object Injection. This issue affects Testimonial Slider: from n/a through 2.0.13.
{
"affected": [],
"aliases": [
"CVE-2025-30889"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-03T14:15:34Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in PickPlugins Testimonial Slider allows Object Injection. This issue affects Testimonial Slider: from n/a through 2.0.13.",
"id": "GHSA-8v6m-wm8j-qpv7",
"modified": "2026-04-01T18:34:27Z",
"published": "2025-04-03T15:31:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-30889"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/testimonial/vulnerability/wordpress-testimonial-slider-plugin-2-0-13-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-8W26-6F25-CM9X
Vulnerability from github – Published: 2021-12-09 19:16 – Updated: 2023-09-14 15:52FasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to org.apache.tomcat.dbcp.dbcp2.datasources.SharedPoolDataSource.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "com.fasterxml.jackson.core:jackson-databind"
},
"ranges": [
{
"events": [
{
"introduced": "2.0.0"
},
{
"fixed": "2.9.10.8"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-36185"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2021-03-18T23:37:42Z",
"nvd_published_at": "2021-01-06T23:15:00Z",
"severity": "HIGH"
},
"details": "FasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to `org.apache.tomcat.dbcp.dbcp2.datasources.SharedPoolDataSource`.",
"id": "GHSA-8w26-6f25-cm9x",
"modified": "2023-09-14T15:52:47Z",
"published": "2021-12-09T19:16:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-36185"
},
{
"type": "WEB",
"url": "https://github.com/FasterXML/jackson-databind/issues/2998"
},
{
"type": "WEB",
"url": "https://github.com/FasterXML/jackson-databind/commit/567194c53ae91f0a14dc27239afb739b1c10448a"
},
{
"type": "WEB",
"url": "https://cowtowncoder.medium.com/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062"
},
{
"type": "PACKAGE",
"url": "https://github.com/FasterXML/jackson-databind"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/04/msg00025.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210205-0005"
},
{
"type": "WEB",
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
},
{
"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://www.oracle.com/security-alerts/cpuoct2021.html"
}
],
"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"
}
],
"summary": "Unsafe Deserialization in jackson-databind"
}
GHSA-8WJ8-VCGV-J3HF
Vulnerability from github – Published: 2026-06-15 21:30 – Updated: 2026-06-15 21:30Author PHP Object Injection in ShortPixel Image Optimizer <= 6.4.3 versions.
{
"affected": [],
"aliases": [
"CVE-2026-39471"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-15T21:16:43Z",
"severity": "HIGH"
},
"details": "Author PHP Object Injection in ShortPixel Image Optimizer \u003c= 6.4.3 versions.",
"id": "GHSA-8wj8-vcgv-j3hf",
"modified": "2026-06-15T21:30:44Z",
"published": "2026-06-15T21:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39471"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/shortpixel-image-optimiser/vulnerability/wordpress-shortpixel-image-optimizer-plugin-6-4-3-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"
}
]
}
GHSA-8WM8-7PXP-G9M4
Vulnerability from github – Published: 2022-05-13 01:34 – Updated: 2022-05-13 01:34A Java deserialization vulnerability in Cisco Unity Express (CUE) could allow an unauthenticated, remote attacker to execute arbitrary shell commands with the privileges of the root user. The vulnerability is due to insecure deserialization of user-supplied content by the affected software. An attacker could exploit this vulnerability by sending a malicious serialized Java object to the listening Java Remote Method Invocation (RMI) service. A successful exploit could allow the attacker to execute arbitrary commands on the device with root privileges.
{
"affected": [],
"aliases": [
"CVE-2018-15381"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-11-08T16:29:00Z",
"severity": "CRITICAL"
},
"details": "A Java deserialization vulnerability in Cisco Unity Express (CUE) could allow an unauthenticated, remote attacker to execute arbitrary shell commands with the privileges of the root user. The vulnerability is due to insecure deserialization of user-supplied content by the affected software. An attacker could exploit this vulnerability by sending a malicious serialized Java object to the listening Java Remote Method Invocation (RMI) service. A successful exploit could allow the attacker to execute arbitrary commands on the device with root privileges.",
"id": "GHSA-8wm8-7pxp-g9m4",
"modified": "2022-05-13T01:34:22Z",
"published": "2022-05-13T01:34:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15381"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181107-cue"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/105876"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1042130"
}
],
"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-8WPF-WJV4-4W82
Vulnerability from github – Published: 2023-12-10 21:30 – Updated: 2023-12-10 21:30** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in DeepFaceLab pretrained DF.wf.288res.384.92.72.22. It has been rated as critical. Affected by this issue is some unknown functionality of the file DFLIMG/DFLJPG.py. The manipulation leads to deserialization. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The identifier of this vulnerability is VDB-247364. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
{
"affected": [],
"aliases": [
"CVE-2023-6656"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-12-10T21:15:07Z",
"severity": "MODERATE"
},
"details": "** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in DeepFaceLab pretrained DF.wf.288res.384.92.72.22. It has been rated as critical. Affected by this issue is some unknown functionality of the file DFLIMG/DFLJPG.py. The manipulation leads to deserialization. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The identifier of this vulnerability is VDB-247364. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.",
"id": "GHSA-8wpf-wjv4-4w82",
"modified": "2023-12-10T21:30:28Z",
"published": "2023-12-10T21:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6656"
},
{
"type": "WEB",
"url": "https://github.com/bayuncao/vul-cve-1"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.247364"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.247364"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-8WW6-P355-PVJQ
Vulnerability from github – Published: 2022-05-24 19:03 – Updated: 2022-05-24 19:03The BDew BdLib library before 1.16.1.7 for Minecraft allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of its use of Java serialization.
{
"affected": [],
"aliases": [
"CVE-2021-33806"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-03T12:15:00Z",
"severity": "CRITICAL"
},
"details": "The BDew BdLib library before 1.16.1.7 for Minecraft allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of its use of Java serialization.",
"id": "GHSA-8ww6-p355-pvjq",
"modified": "2022-05-24T19:03:58Z",
"published": "2022-05-24T19:03:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33806"
},
{
"type": "WEB",
"url": "https://github.com/bdew-minecraft/bdlib/commit/447210530ceec72fb3374efecb0930ed359d2297"
},
{
"type": "WEB",
"url": "https://bdew.net"
},
{
"type": "WEB",
"url": "https://vuln.ryotak.me/advisories/46"
},
{
"type": "WEB",
"url": "https://www.curseforge.com/minecraft/mc-mods/bdlib/files/3331330"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-8WWQ-46J2-7394
Vulnerability from github – Published: 2022-05-24 17:14 – Updated: 2022-05-24 17:14Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization). Supported versions that are affected are Java SE: 7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. CVSS 3.0 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).
{
"affected": [],
"aliases": [
"CVE-2020-2757"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-04-15T14:15:00Z",
"severity": "MODERATE"
},
"details": "Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization). Supported versions that are affected are Java SE: 7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. CVSS 3.0 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).",
"id": "GHSA-8wwq-46j2-7394",
"modified": "2022-05-24T17:14:50Z",
"published": "2022-05-24T17:14:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-2757"
},
{
"type": "WEB",
"url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10332"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/04/msg00024.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CKAV6KFFAEANXAN73AFTGU7Z6YNRWCXQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7VHC4EW36KZEIDQ56RPCWBZCQELFFKN"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NYHHHZRHXCBGRHGE5UP7UEB4IZ2QX536"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202006-22"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202209-15"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20200416-0004"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4337-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4662"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4668"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2020.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00000.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00023.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00048.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-8X2R-V9X5-3QGH
Vulnerability from github – Published: 2026-02-03 18:30 – Updated: 2026-02-04 16:49Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-f83h-ghpp-7wcc. This link is maintained to preserve external references.
Original Description
pdfminer.six before 20251230 contains an insecure deserialization vulnerability in the CMap loading mechanism. The library uses Python pickle to deserialize CMap cache files without validation. An attacker with the ability to place a malicious pickle file in a location accessible to the application can trigger arbitrary code execution or privilege escalation when the file is loaded by a trusted process. This is caused by an incomplete patch to CVE-2025-64512.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "pdfminer.six"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "20251230"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-04T16:49:45Z",
"nvd_published_at": "2026-02-03T18:16:17Z",
"severity": "HIGH"
},
"details": "## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-f83h-ghpp-7wcc. This link is maintained to preserve external references.\n\n## Original Description\npdfminer.six before 20251230 contains an insecure deserialization vulnerability in the CMap loading mechanism. The library uses Python pickle to deserialize CMap cache files without validation. An attacker with the ability to place a malicious pickle file in a location accessible to the application can trigger arbitrary code execution or privilege escalation when the file is loaded by a trusted process. This is caused by an incomplete patch to CVE-2025-64512.",
"id": "GHSA-8x2r-v9x5-3qgh",
"modified": "2026-02-04T16:49:45Z",
"published": "2026-02-03T18:30:47Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pdfminer/pdfminer.six/security/advisories/GHSA-f83h-ghpp-7wcc"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-70559"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-f83h-ghpp-7wcc"
},
{
"type": "PACKAGE",
"url": "https://github.com/pdfminer/pdfminer.six"
}
],
"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": "Duplicate Advisory: Insecure Deserialization (pickle) in pdfminer.six CMap Loader \u2014 Local Privesc",
"withdrawn": "2026-02-04T16:49:45Z"
}
GHSA-8X3J-439W-537C
Vulnerability from github – Published: 2026-05-19 12:31 – Updated: 2026-06-29 17:30The TYPO3 "Content Element Selector" (ceselector) extension passes an attacker-controlled cookie directly to PHP's unserialize() without safely processing the input. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server. Exploitation requires the content element to be configured with Persistent Mode: Static in the plugin settings. This has been patched in version 3.0.3, 4.0.2, 5.0.1, and 6.0.1.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "mmc/ceselector"
},
"ranges": [
{
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "6.0.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "mmc/ceselector"
},
"ranges": [
{
"events": [
{
"introduced": "5.0.0"
},
{
"fixed": "5.0.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "mmc/ceselector"
},
"ranges": [
{
"events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "mmc/ceselector"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-46725"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-29T17:30:20Z",
"nvd_published_at": "2026-05-19T10:16:25Z",
"severity": "CRITICAL"
},
"details": "The TYPO3 \"Content Element Selector\" (ceselector) extension passes an attacker-controlled cookie directly to PHP\u0027s `unserialize()` without safely processing the input. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server. Exploitation requires the content element to be configured with `Persistent Mode: Static` in the plugin settings. This has been patched in version 3.0.3, 4.0.2, 5.0.1, and 6.0.1.",
"id": "GHSA-8x3j-439w-537c",
"modified": "2026-06-29T17:30:21Z",
"published": "2026-05-19T12:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46725"
},
{
"type": "PACKAGE",
"url": "https://bitbucket.org/thismaechler/typo3-ext-ceselector"
},
{
"type": "WEB",
"url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/mmc/ceselector/CVE-2026-46725.yaml"
},
{
"type": "WEB",
"url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-013"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "TYPO3 Remote Code Execution in extension \"Content Element Selector\" (ceselector)"
}
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.