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TI-2026-39245 Aliases CVE-2026-54353GHSA-gfq7-5x4g-3xhf

Budibase: Potential SSRF DNS rebinding bypass in outbound fetch validation

Priority HIGH 70CWE-367Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Budibase is an open-source low-code platform. Prior to 3.39.9, authenticated users with automation permissions can bypass Budibase's SSRF blacklist through DNS rebinding. The outbound fetch flow validates a hostname against the blacklist before the request is sent, but the actual socket connection later performs a separate DNS lookup through node-fetch. Since the validated IPs are never pinned to the connection, an attacker-controlled hostname can return a public IP during validation and a private/internal IP during the real connection. This results in a non-blind SSRF primitive against internal services reachable from the Budibase host, including loopback, RFC1918 ranges, and cloud metadata endpoints. This vulnerability is fixed in 3.39.9.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00213 11th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed budibase (Budibase): 3.39.9@budibase/backend-core (npm): 3.39.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Budibasebudibasebefore 3.39.93.39.9Patch availableCNA
—@budibase/backend-core (npm)before 3.39.93.39.9Patch availableGHSA-gfq7-5x4g-3xhf
  • budibase VendorBudibase Affected before 3.39.9 Fixed in 3.39.9 Patch available CNA
  • @budibase/backend-core (npm) Vendor— Affected before 3.39.9 Fixed in 3.39.9 Patch available GHSA-gfq7-5x4g-3xhf

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:budibase:budibase:*:*:*:*:*:*:*:*before 3.39.9VulnerableBudibase
  • cpe:2.3:a:budibase:budibase:*:*:*:*:*:*:*:* Versions before 3.39.9 Vulnerable ·Budibase

Remediation

  • Fix · CNA budibase (Budibase) Fixed in 3.39.9
  • Fix · GHSA-gfq7-5x4g-3xhf @budibase/backend-core (npm) Fixed in 3.39.9 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54353
  2. 2026-10-03 Alias added: GHSA-gfq7-5x4g-3xhf

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-39242 Budibase: Anonymous NoSQL operator injection via published-app query templates CVSS 3.1CRITICAL 10.0
  • TI-2026-24369 Budibase Universal Auth Bypass via Webhook Query Param Injection CVSS 3.1CRITICAL 9.1
  • TI-2026-39244 Budibase: Arbitrary file read by workspace-builder via PWA-zip symlink upload CVSS 3.1CRITICAL 9.6
  • TI-2026-39243 Budibase: Mass Assignment in Webhook Trigger Allows Cross-Workspace Automation Execution via appId Override CVSS 3.1CRITICAL 9.6
  • TI-2026-24371 Budibase: Server-Side Request Forgery via REST Connector with Empty Default Blacklist CVSS 3.1CRITICAL 9.9
  • TI-2026-23473 Budibase PWA ZIP Upload Path Traversal Allows Reading Arbitrary Server Files Including All Environment Secrets CVSS 3.1CRITICAL 9.6
See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences