CVE-2026-126269

HIGH 8.7

NocoDB before 2026.09.0 Stored XSS via Attachment MIME Type

CVSS Score

8.7

EPSS Score

0.0%

EPSS Percentile

0th

NocoDB before 2026.09.0 contains a stored cross-site scripting vulnerability that allows authenticated Editor users to execute scripts by storing crafted attachment MIME types like text/html;image/png. Attackers can write the value through the records API so the /dltemp signed URL serves HTML inline, stealing session tokens from localStorage to impersonate victims.

CWE	CWE-79
Vendor	nocodb
Product	nocodb
Published	Nov 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

nocodb / nocodb

0 < 2026.09.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/nocodb/nocodb/security/advisories/GHSA-3f7w-wqf7-786q vulncheck.com: https://www.vulncheck.com/advisories/nocodb-before-2026.09.0-stored-xss-via-attachment-mime-type

Credits

🔍 PratibhaDevi29