CVE-2026-73307
MediumCVSS 4.9Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
Budibase is an open-source low-code platform. Prior to 3.39.4, uploadUrl in packages/server/src/utilities/fileUtils.ts used a bare server-side fetch for string attachment values passed by processAttachments in packages/server/src/sdk/workspace/ai/helpers/rows.ts. A builder with the AI table-generation feature could cause an attachment value to reference an internal service or cloud metadata endpoint, and the response would be stored as an attachment without fetchWithBlacklist validation. This issue is fixed in version 3.39.4.
Risk Assessment
The risk includes the potential to access internal services or cloud metadata, which can lead to disclosure of sensitive information or privilege escalation.
Recommendation
It is recommended to update Budibase to version 3.39.4 or later, which contains the fix.
Original NVD description (English source)
Budibase is an open-source low-code platform. Prior to 3.39.4, uploadUrl in packages/server/src/utilities/fileUtils.ts used a bare server-side fetch for string attachment values passed by processAttachments in packages/server/src/sdk/workspace/ai/helpers/rows.ts. A builder with the AI table-generation feature could cause an attachment value to reference an internal service or cloud metadata endpoint, and the response would be stored as an attachment without fetchWithBlacklist validation. This issue is fixed in version 3.39.4.