CVE-2026-72779
Craft CMS 5.0.0-RC1 before 5.10.6 Arbitrary File Read via SplFileObject
Description
Craft CMS 5.0.0-RC1 before 5.10.6 and 4.0.0-RC1 before 4.18.2 contain an arbitrary file read vulnerability. The create() Twig function restricts class instantiation using a 5-entry blocklist that does not include SplFileObject, allowing an authenticated administrator (with allowAdminChanges=true) to configure a malicious entry type title or URI format that instantiates SplFileObject in a non-sandboxed template context. When a user subsequently creates an entry in the affected section, arbitrary files on the server (such as .env containing the security key and database credentials) are read and rendered as entry titles.
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 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Craft CMS to version 5.10.6 or later.
- Update Craft CMS to version 4.18.2 or later.
- Apply vendor patches or updates immediately.
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-2026-72779.
| URL | Resource |
|---|---|
| https://github.com/craftcms/cms/security/advisories/GHSA-957r-qf9p-67xw | |
| https://www.vulncheck.com/advisories/craft-cms-rc1-before-arbitrary-file-read-via-splfileobject |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72779 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-2026-72779
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-2026-72779 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72779 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: Craft CMS 5.0.0-RC1 anterior a 5.10.6 y 4.0.0-RC1 anterior a 4.18.2 contienen una vulnerabilidad de lectura arbitraria de archivos. La función Twig create() restringe la instanciación de clases utilizando una lista de bloqueo de 5 entradas que no incluye SplFileObject, lo que permite a un administrador autenticado (con allowAdminChanges=true) configurar un título de tipo de entrada o formato URI malicioso que instancia SplFileObject en un contexto de plantilla no aislado. Cuando un usuario crea posteriormente una entrada en la sección afectada, los archivos arbitrarios en el servidor (como .env que contiene la clave de seguridad y las credenciales de la base de datos) se leen y se renderizan como títulos de entrada. Title: cms de craftcms, Description: Craft CMS 5.0.0-RC1 anterior a 5.10.6 y 4.0.0-RC1 anterior a 4.18.2 contienen una vulnerabilidad de lectura arbitraria de archivos. La función Twig create() restringe la instanciación de clases utilizando una lista de bloqueo de 5 entradas que no incluye SplFileObject, lo que permite a un administrador autenticado (con allowAdminChanges=true) configurar un título de tipo de entrada o formato URI malicioso que instancia SplFileObject en un contexto de plantilla no aislado. Cuando un usuario crea posteriormente una entrada en la sección afectada, los archivos arbitrarios en el servidor (como .env que contiene la clave de seguridad y las credenciales de la base de datos) se leen y se renderizan como títulos de entrada. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: cms de craftcms, Description: Craft CMS 5.0.0-RC1 anterior a 5.10.6 y 4.0.0-RC1 anterior a 4.18.2 contienen una vulnerabilidad de lectura arbitraria de archivos. La función Twig create() restringe la instanciación de clases utilizando una lista de bloqueo de 5 entradas que no incluye SplFileObject, lo que permite a un administrador autenticado (con allowAdminChanges=true) configurar un título de tipo de entrada o formato URI malicioso que instancia SplFileObject en un contexto de plantilla no aislado. Cuando un usuario crea posteriormente una entrada en la sección afectada, los archivos arbitrarios en el servidor (como .env que contiene la clave de seguridad y las credenciales de la base de datos) se leen y se renderizan como títulos de entrada. -
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-2026-72779.json">CVE-2026-72779</a> Added Reference https://github.com/craftcms/cms/security/advisories/GHSA-957r-qf9p-67xw Added Reference https://www.vulncheck.com/advisories/craft-cms-rc1-before-arbitrary-file-read-via-splfileobject Removed Reference https://github.com/craftcms/cms/security/advisories/GHSA-957r-qf9p-67xw Removed Reference https://www.vulncheck.com/advisories/craft-cms-rc1-before-arbitrary-file-read-via-splfileobject -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 11, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-72779', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-11T14:54:30.379349Z'} -
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 5.0.0-RC1 before 5.10.6 and 4.0.0-RC1 before 4.18.2 contain an arbitrary file read vulnerability. The create() Twig function restricts class instantiation using a 5-entry blocklist that does not include SplFileObject, allowing an authenticated administrator (with allowAdminChanges=true) to configure a malicious entry type title or URI format that instantiates SplFileObject in a non-sandboxed template context. When a user subsequently creates an entry in the affected section, arbitrary files on the server (such as .env containing the security key and database credentials) are read and rendered as entry titles. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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:H/UI:R/S:U/C:H/I:N/A:N Added CWE CWE-184 Added Reference https://github.com/craftcms/cms/security/advisories/GHSA-957r-qf9p-67xw Added Reference https://www.vulncheck.com/advisories/craft-cms-rc1-before-arbitrary-file-read-via-splfileobject