Cube Denial of Service (DoS) - An authenticated attacker can crash the server by sending a specially crafted request

published 2026-02-09 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-6246 , GHSA-9vph-2hvm-x66g

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits: 0; none known

Cube is a semantic layer for building data applications. From 1.1.17 to before 1.5.13 and 1.4.2, it is possible to make the entire Cube API unavailable by submitting a specially crafted request to a Cube API endpoint. This vulnerability is fixed in 1.5.13 and 1.4.2.

Patch / fix

fixed in 2

npm @cubejs-backend/server-core 1.4.2, 1.5.13
cube cube.js 1.4.2, 1.5.13

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 8 mo ago (2026-02-11)

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	@cubejs-backend/server-core	>=1.1.17, <1.4.2 >=1.5.0, <1.5.13	1.4.2 1.5.13

Affected products

cube-js cube

Classification

Weakness

CWE-755 Improper Handling of Exceptional Conditions

References

github.com /cube-js/cube/security/advisories/GHSA-9vph-2hvm-x66g
web, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2026-25957
advisory
github.com /cube-js/cube
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary