CVE-2026-72778
Craft CMS 5.0.0-RC1 before 5.10.6 Authenticated RCE via condition.config
Description
Craft CMS versions from 4.0.0-RC1 before 4.18.2 and from 5.0.0-RC1 before 5.10.6 contain an authenticated remote code execution vulnerability in the control panel element-search condition handling. Craft cleanses the outer request-controlled condition array via Component::cleanseConfig(), but Conditions::createCondition() later decodes and merges the JSON string in condition.config without re-running cleanseConfig() on the decoded configuration. Because condition.config is a JSON string during the first cleanse, Yii special config keys such as 'as ...' and 'on ...' can be hidden inside it and, after JSON decoding, are interpreted by Yii as behavior/event configuration during FieldLayout object creation. An attacker with an authenticated control panel session (and a valid CSRF token) can exploit this to execute operating system commands as the PHP/web user.
INFO
Published Date :
Aug. 11, 2026, 1:19 p.m.
Last Modified :
Oct. 24, 2026, 3:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Craft CMS to version 4.18.2 or later.
- Update Craft CMS to version 5.10.6 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72778.
| URL | Resource |
|---|---|
| https://github.com/craftcms/cms/security/advisories/GHSA-265m-7826-wjqm | |
| https://www.vulncheck.com/advisories/craft-cms-rc1-before-authenticated-rce-via-condition-config |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72778 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72778
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72778 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72778 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: cms de craftcms, Description: Versiones de Craft CMS desde la 4.0.0-RC1 anterior a la 4.18.2 y desde la 5.0.0-RC1 anterior a la 5.10.6 contienen una vulnerabilidad de ejecución remota de código autenticada en el manejo de condiciones de búsqueda de elementos del panel de control. Craft limpia el array de condiciones externo controlado por la solicitud a través de Component::cleanseConfig(), pero Conditions::createCondition() decodifica y fusiona posteriormente la cadena JSON en condition.config sin volver a ejecutar cleanseConfig() en la configuración decodificada. Debido a que condition.config es una cadena JSON durante la primera limpieza, las claves de configuración especiales de Yii como ’as ...’ y ’on ...’ pueden ocultarse dentro de ella y, después de la decodificación JSON, son interpretadas por Yii como configuración de comportamiento/evento durante la creación del objeto FieldLayout. Un atacante con una sesión autenticada del panel de control (y un token CSRF válido) puede explotar esto para ejecutar comandos del sistema operativo como el usuario PHP/web. Title: cms de craftcms, Description: Versiones de Craft CMS desde la 4.0.0-RC1 anterior a la 4.18.2 y desde la 5.0.0-RC1 anterior a la 5.10.6 contienen una vulnerabilidad de ejecución remota de código autenticada en el manejo de condiciones de búsqueda de elementos del panel de control. Craft limpia el array de condiciones externo controlado por la solicitud a través de Component::cleanseConfig(), pero Conditions::createCondition() decodifica y fusiona posteriormente la cadena JSON en condition.config sin volver a ejecutar cleanseConfig() en la configuración decodificada. Debido a que condition.config es una cadena JSON durante la primera limpieza, las claves de configuración especiales de Yii como ’as ...’ y ’on ...’ pueden ocultarse dentro de ella y, después de la decodificación JSON, son interpretadas por Yii como configuración de comportamiento/evento durante la creación del objeto FieldLayout. Un atacante con una sesión autenticada del panel de control (y un token CSRF válido) puede explotar esto para ejecutar comandos del sistema operativo como el usuario PHP/web. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: cms de craftcms, Description: Versiones de Craft CMS desde la 4.0.0-RC1 anterior a la 4.18.2 y desde la 5.0.0-RC1 anterior a la 5.10.6 contienen una vulnerabilidad de ejecución remota de código autenticada en el manejo de condiciones de búsqueda de elementos del panel de control. Craft limpia el array de condiciones externo controlado por la solicitud a través de Component::cleanseConfig(), pero Conditions::createCondition() decodifica y fusiona posteriormente la cadena JSON en condition.config sin volver a ejecutar cleanseConfig() en la configuración decodificada. Debido a que condition.config es una cadena JSON durante la primera limpieza, las claves de configuración especiales de Yii como ’as ...’ y ’on ...’ pueden ocultarse dentro de ella y, después de la decodificación JSON, son interpretadas por Yii como configuración de comportamiento/evento durante la creación del objeto FieldLayout. Un atacante con una sesión autenticada del panel de control (y un token CSRF válido) puede explotar esto para ejecutar comandos del sistema operativo como el usuario PHP/web. -
CVE Modified by [email protected]
Oct. 08, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/72xxx/CVE-2026-72778.json">CVE-2026-72778</a> Added Reference https://github.com/craftcms/cms/security/advisories/GHSA-265m-7826-wjqm Added Reference https://www.vulncheck.com/advisories/craft-cms-rc1-before-authenticated-rce-via-condition-config Removed Reference https://github.com/craftcms/cms/security/advisories/GHSA-265m-7826-wjqm Removed Reference https://www.vulncheck.com/advisories/craft-cms-rc1-before-authenticated-rce-via-condition-config -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 14, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-72778', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-14T19:52:54.520965Z'} -
New CVE Received by [email protected]
Aug. 11, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'craftcms', 'product': 'cms', 'versions': [{'status': 'affected', 'version': '5.0.0-RC1', 'lessThan': '5.10.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.6', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'craftcms', 'product': 'cms', 'versions': [{'status': 'affected', 'version': '4.0.0-RC1', 'lessThan': '4.18.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '4.18.2', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description Craft CMS versions from 4.0.0-RC1 before 4.18.2 and from 5.0.0-RC1 before 5.10.6 contain an authenticated remote code execution vulnerability in the control panel element-search condition handling. Craft cleanses the outer request-controlled condition array via Component::cleanseConfig(), but Conditions::createCondition() later decodes and merges the JSON string in condition.config without re-running cleanseConfig() on the decoded configuration. Because condition.config is a JSON string during the first cleanse, Yii special config keys such as 'as ...' and 'on ...' can be hidden inside it and, after JSON decoding, are interpreted by Yii as behavior/event configuration during FieldLayout object creation. An attacker with an authenticated control panel session (and a valid CSRF token) can exploit this to execute operating system commands as the PHP/web user. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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 Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-915 Added Reference https://github.com/craftcms/cms/security/advisories/GHSA-265m-7826-wjqm Added Reference https://www.vulncheck.com/advisories/craft-cms-rc1-before-authenticated-rce-via-condition-config