Prototype pollution in NocoDB - CVE-2026-24766
Published: April 27, 2026
Vulnerability identifier: #VU127977
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-24766
CWE-ID: CWE-1321
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improperly controlled modification of object prototype attributes in the /api/v2/meta/connection/test endpoint when processing user-supplied connection test input. A remote privileged user can send a specially crafted request to cause a denial of service.
The issue pollutes Object.prototype globally, causing subsequent database write operations to fail application-wide until the server is restarted.
Affected software
NocoDB
How to mitigate CVE-2026-24766
Install security update from vendor's website.
NocoDB - update to 0.301.0