Cube Core is vulnerable to privilege escalation via a specially crafted request
Date: 2026-02
Affected: npm/@cubejs-backend/server-core, npm/@cubejs-backend/server-core, npm/@cubejs-backend/server-core
Attack vector: other
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2026-25958
CWE: CWE-807
CVSS: 7.7 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)

### **Impact** It is possible to make a specially crafted request with a valid API token that leads to privilege escalation. ### Affected Versions: `≥= 0.27.19` ### Mitigation: Upgrade to a patched version: - 1.5.13 and later (regular release) - 1.4.2 (active [LTS release](https://cube.dev/docs/product/administration/distribution#long-term-support)) - 1.0.14 (end-of-life LTS release) ### **References** The issue was reported by our Core engineer, Dmitrii Patsura (@ovr), in our internal Slack and was promptly patched in a recent update.


Mitigations:

Architectural layers (MAESTRO):