CVE-2026-73307

Budibase: SSRF via bare fetch() in uploadUrl during AI table generation

MEDIUM
4.9
CVSS Score
Published: August 12, 2026 at 06:59 PM UTC
Updated: September 8, 2026 at 09:09 PM UTC
1 product affected across 1 vendorBudibase

Using budibase by Budibase?

Get instant alerts when new vulnerabilities affect budibase - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.9
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.39.4
Affected range stops below 3.39.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card