Database Manipulation Vulnerability in October CMS by October
CVE-2026-26274

6.6MEDIUM

Key Information:

Vendor

Octobercms

Status
October
Vendor
CVE Published:
21 April 2026

What is CVE-2026-26274?

A significant security flaw in October CMS allows backend users with Developer permissions to perform unauthorized database operations. This is due to an issue in the Twig sandbox security policy, which improperly permits database write operations when 'cms.safe_mode' is enabled. Exploiting this vulnerability, attackers can leverage Twig template markup to execute insert, update, and delete actions on any database table through the query builder, providing an easy avenue for data manipulation. This issue has been addressed in versions 3.7.14 and 4.1.10.

Affected Version(s)

october >= 4.0.0, < 4.1.10 < 4.0.0, 4.1.10

october < 3.7.14 < 3.7.14

References

https://github.com/octobercms/october/security/advisories...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.6
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.