CVE-2026-53929: medium-severity vulnerability in nocodb
NocoDB: Stored Cross-Site Scripting via Secure Attachment
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.1epss 0.4%
exploitation probability
0.4%top 68% of all CVEs
observed exploitation
nono source reports it
NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, with NC_SECURE_ATTACHMENTS=true, an authenticated uploader could deliver .html or .svg attachments that the browser rendered inline from the NocoDB origin instead of forcing a download. The signed attachment handler stored response-header overrides under PascalCase keys (ResponseContentDisposition, ResponseContentType) while the controller that served the file read them under lowercase-hyphen names (response-content-disposition). The mismatch dropped the Content-Disposition: attachment header, leaving Express to auto-render .html, .svg, and similar inline. This vulnerability is fixed in 2026.05.1.
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
Affected products
nocodb · nocodbRelated CVEs — nocodb
In the same product, most dangerous first.
CVE-2022-22120MEDIUMNocoDB - Observable Discrepancy in the password-reset featureEPSS 1.4%CVE-2022-22121HIGHNocoDB - CSV Injection in User ManagementEPSS 1.2%CVE-2023-43794MEDIUMSQL Injection in nocodbEPSS 0.8%CVE-2026-28358LOWNocoDB: User Enumeration via Password Reset EndpointEPSS 0.7%CVE-2025-27506MEDIUMNocoDB Vulnerable to Reflected Cross-Site Scripting on Reset Password PageEPSS 0.7%CVE-2023-50718MEDIUMNocoDB SQL Injection vulnerabilityEPSS 0.7%