CVE-2026-26274: CWE-184: Incomplete List of Disallowed Inputs in octobercms october
October is a Content Management System (CMS) and web platform. Prior to 3.7.14 and 4.1.10, a vulnerability was identified in the Twig sandbox security policy that allowed database write operations when cms.safe_mode is enabled. Backend users with Developer permissions could use Twig template markup to execute insert, update, and delete operations on any database table through the query builder, which is included in the sandbox allow-list. This vulnerability is fixed in 3.7.14 and 4.1.10.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-26274 affects October CMS's Twig sandbox security policy. In affected versions, the sandbox incorrectly allows database write operations through the query builder, which is included in the allow-list despite cms.safe_mode being enabled. This permits backend users with Developer permissions to execute insert, update, and delete commands on any database table via Twig template markup. The issue is fixed in October CMS versions 3.7.14 and 4.1.10.
Potential Impact
Exploitation of this vulnerability allows authorized backend users with Developer permissions to perform unauthorized database write operations, including insertions, updates, and deletions on any database table. This can lead to data integrity compromise and potential disruption of the CMS functionality. The CVSS score of 6.6 reflects a medium severity with high impact on confidentiality, integrity, and availability, requiring high privileges and no user interaction.
Mitigation Recommendations
A fix is available in October CMS versions 3.7.14 and 4.1.10. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated in the advisory.
CVE-2026-26274: CWE-184: Incomplete List of Disallowed Inputs in octobercms october
Description
October is a Content Management System (CMS) and web platform. Prior to 3.7.14 and 4.1.10, a vulnerability was identified in the Twig sandbox security policy that allowed database write operations when cms.safe_mode is enabled. Backend users with Developer permissions could use Twig template markup to execute insert, update, and delete operations on any database table through the query builder, which is included in the sandbox allow-list. This vulnerability is fixed in 3.7.14 and 4.1.10.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-26274 affects October CMS's Twig sandbox security policy. In affected versions, the sandbox incorrectly allows database write operations through the query builder, which is included in the allow-list despite cms.safe_mode being enabled. This permits backend users with Developer permissions to execute insert, update, and delete commands on any database table via Twig template markup. The issue is fixed in October CMS versions 3.7.14 and 4.1.10.
Potential Impact
Exploitation of this vulnerability allows authorized backend users with Developer permissions to perform unauthorized database write operations, including insertions, updates, and deletions on any database table. This can lead to data integrity compromise and potential disruption of the CMS functionality. The CVSS score of 6.6 reflects a medium severity with high impact on confidentiality, integrity, and availability, requiring high privileges and no user interaction.
Mitigation Recommendations
A fix is available in October CMS versions 3.7.14 and 4.1.10. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation steps are indicated in the advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-02-12T17:10:53.413Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e7a64f19fe3cd2cde569bf
Added to database: 4/21/2026, 4:31:11 PM
Last enriched: 4/21/2026, 4:46:59 PM
Last updated: 4/22/2026, 7:22:31 AM
Views: 12
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.