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NVD / CVE Program· CNA GitHub_M

CVE-2026-73307: Budibase: SSRF via bare fetch() in uploadUrl during AI table generation

Noroxi assessment

Priority: Monitor (action score 19/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.42% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Budibase budibase 3.39.4.

Low priority for now. Upgrade to Budibase budibase 3.39.4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 4.9 · v4.0—No exploit Fix available
Published
Aug 12, 2026
Updated
Sep 8, 2026
EPSS
0.4% · 36th percentile

Report tools

JSON

Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · GitHub_M
4.9
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-73307

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • Budibase budibase

    • < 3.39.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
npm@budibase/serverup to and including 3.38.1—

Same product

budibase: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31816Budibase Universal Auth Bypass via Webhook Query Param Injection
    41Plan
  • CVE-2026-54350Budibase: Anonymous NoSQL operator injection via published-app query templates
    39Monitor
  • CVE-2026-46425Budibase: SCIM endpoints lack role-based authorization, BASIC users CRUD tenant users
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-73303Aug 12, 2026 · Budibase: Email Change IDOR via POST /api/v2/email allows full Account Takeover (accountId not validated against session)
    32Monitor
  • ← EarlierCVE-2026-73306Aug 12, 2026 · Budibase: Account Enumeration via Login Lockout Response Differential
    21Monitor
  • Later →CVE-2026-73308Aug 12, 2026 · Budibase: OAuth2 Token Disclosure via Automation Test Results Broadcast to Other Builders
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Budibase budibase3.39.4 · descriptionVendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-31818131 days apartBudibase: Server-Side Request Forgery via REST Connector with Empty Default Blacklist
    39Monitor
  • CVE-2026-4815377 days apartBudibase: SSRF via OAuth2 token endpoint URL reaches internal hosts and cloud metadata
    34Monitor
  • CVE-2026-33226145 days apartBudibase Unrestricted Server-Side Request Forgery (SSRF) via REST Datasource Query Preview
    34Monitor
  • CVE-2026-10375750 days apartBudibase before 3.41.0 SSRF via uploadUrl in AI Table Generation
    33Monitor
  • CVE-2026-6731111 days apartBudibase before 3.38.1 SSRF Blacklist Bypass via HTTP Redirect
    32Monitor
  • CVE-2026-4506177 days apartBudibase: SSRF via trivial `.tar.gz` substring bypass in Plugin URL upload (`/api/plugin`)
    30Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2026-733021 days apartBudibase: OIDC SSO account takeover: incoming identity linked by email without checking email_verified
    36Monitor
  • CVE-2026-728561 days apartBudibase before 3.40.0 Authentication Bypass via Tenant Owner Email
    34Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-918 · Server-Side Request Forgery (SSRF)

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records