October CMS safe mode bypass using Twig sandbox escape
Priority MEDIUM 41CWE-94Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-94.
Summary
October is a Content Management System (CMS) and web platform to assist with development workflow. An authenticated backend user with the `editor.cms_pages`, `editor.cms_layouts`, or `editor.cms_partials` permissions who would normally not be permitted to provide PHP code to be executed by the CMS due to `cms.safe_mode` being enabled can write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This issue has been patched in 3.4.15.
Why it matters now
EPSS 0.00873 59th percentileScored 2026-11-07
Fix Fixed october (octobercms): 3.4.15october/system (Packagist): 3.4.15
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| October CMS | october | 3.0.0 to before 3.4.15 | 3.4.15 | Patch available | CNA |
| — | october/system (Packagist) | 3.0.0 to before 3.4.15 | 3.4.15 | Patch available | GHSA-p8q3-h652-65vx |
- october VendorOctober CMS Affected 3.0.0 to before 3.4.15 Fixed in 3.4.15 Patch available CNA
- october/system (Packagist) Vendor— Affected 3.0.0 to before 3.4.15 Fixed in 3.4.15 Patch available GHSA-p8q3-h652-65vx
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* | 3.0.0 to before 3.4.15 | Vulnerable | October CMS |
- cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.4.15 Vulnerable ·October CMS
Remediation
- Fix · CNA october (octobercms) Fixed in 3.4.15
- Fix · GHSA-p8q3-h652-65vx october/system (Packagist) Fixed in 3.4.15 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-44382
- 2026-10-03 Alias added: GHSA-p8q3-h652-65vx
References
More October CMS October vulnerabilities
- TI-2021-12316 Account Takeover in Octobercms KEVCVSS 3.1CRITICAL 9.1
- TI-2021-12318 Arbitrary code execution in october/system CVSS 3.1HIGH 8.8
- TI-2017-14456 October CMS build 412 is vulnerable to PHP code execution in the file upload… CVSS 3.0HIGH 7.2
- TI-2023-23545 A Cross-Site Scripting (XSS) vulnerability in installation of October v.3.4.16 allows an… CVSS 3.1MEDIUM 5.4
- TI-2023-19223 An arbitrary file upload vulnerability in October CMS v3.4.4 allows attackers to execute… CVSS 3.1MEDIUM 5.4
- TI-2024-30847 October 3.6.30 allows an authenticated admin account to upload a PDF file containing… CVSS 3.1MEDIUM 4.7
Sources
- CVE-2023-44382 · CVE Program
- CVE-2023-44382 · NVD
- FIRST EPSS
- GHSA-p8q3-h652-65vx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences