Authenticated file write leads to remote code execution in october/system
Key facts
- Attack vector
- Network
- Privileges required
- Low
- 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 CMS is a self-hosted content management system (CMS) platform based on the Laravel PHP Framework. Prior to versions 1.0.473 and 1.1.6, an attacker with "create, modify and delete website pages" privileges in the backend is able to execute PHP code by running specially crafted Twig code in the template markup. The issue has been patched in Build 473 (v1.0.473) and v1.1.6. Those unable to upgrade may apply the patch to their installation manually as a workaround.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| October CMS | october | before 1.0.473; 1.1.0 to before 1.1.6 | 1.0.473, 1.1.6 | Patch available | CNA |
| — | october/system (Packagist) | 1.1.0 to before 1.1.6 | 1.1.6 | Patch available | GHSA-wv23-pfj7-2mjj |
| — | october/system (Packagist) | before 1.0.473 | 1.0.473 | Patch available | GHSA-wv23-pfj7-2mjj |
- october VendorOctober CMS Affected before 1.0.473; 1.1.0 to before 1.1.6 Fixed in 1.0.473, 1.1.6 Patch available CNA
- october/system (Packagist) Vendor— Affected 1.1.0 to before 1.1.6 Fixed in 1.1.6 Patch available GHSA-wv23-pfj7-2mjj
- october/system (Packagist) Vendor— Affected before 1.0.473 Fixed in 1.0.473 Patch available GHSA-wv23-pfj7-2mjj
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* | before 1.0.473; 1.1.0 to before 1.1.6 | Vulnerable | October CMS |
- cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* Versions before 1.0.473; 1.1.0 to before 1.1.6 Vulnerable ·October CMS
Remediation
- Fix · CNA october (octobercms) Fixed in 1.0.473, 1.1.6
- Fix · GHSA-wv23-pfj7-2mjj october/system (Packagist) Fixed in 1.1.6 Advisory →
- Fix · GHSA-wv23-pfj7-2mjj october/system (Packagist) Fixed in 1.0.473 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-32649
- 2026-10-03 Alias added: GHSA-wv23-pfj7-2mjj
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-2021-32649 · CVE Program
- CVE-2021-32649 · NVD
- FIRST EPSS
- GHSA-wv23-pfj7-2mjj · 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