Cross-site scripting in NocoDB - CVE-2026-126269
Published: November 9, 2026 / Updated: November 13, 2026
Vulnerability identifier: #VU162877
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-126269
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an authenticated attacker to execute same-origin scripts in NocoDB and impersonate a victim by stealing their session token.
The vulnerability exists due to substring matching in the attachment preview MIME allow-list, allowing crafted MIME values to serve HTML inline from NocoDB's origin. An authenticated attacker with a base Editor role or above can store a malicious attachment through the records API that executes when a victim opens it in the application or follows its signed link.
Affected software
NocoDB
How to mitigate CVE-2026-126269
Install security update from vendor's website.
NocoDB - update to 2026.09.0