by Kastro
Paper/Archive/CVE-2026-126269

CVE-2026-126269

nocodb nocodb — NocoDB before 2026.09.0 Stored XSS via Attachment MIME Type

CVSS 9.3
critical.is priorityof 100
28
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
nocodb< 2026.09.02026.09.0CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
VulnCheck (CNA)8.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

References

advisorygithub.com/nocodb/nocodb/security/advisories/GHSA-3f7w-wqf7-786qwriteupvulncheck.com/advisories/nocodb-before-2026.09.0-stored-xss-via-attachment-mime-type