Budibase before 3.40.0 DNS Rebinding SSRF via OpenAPI and REST
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Budibase before 3.40.0 contains server-side request forgery vulnerabilities in OpenAPI query import and REST query execution that allow authenticated builder-level users to bypass DNS pinning protections through DNS rebinding attacks. Attackers can configure hostnames that resolve to public addresses during validation but resolve to loopback or private addresses during actual connection, allowing access to blocked internal HTTP services.
Why it matters now
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
Remediation
- Fix · CNA server (budibase) Fixed in 3.40.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
budibase server 3.40.0
6 records Highest priority Priority HIGH 4 HIGH, 2 LOW
Other records, highest priority first
- TI-2026-51076 Budibase before 3.40.0 SQL Injection via Unauthenticated WebhookPriority HIGH 80
- TI-2026-51075 Budibase before 3.40.0 Arbitrary File Write via Path TraversalPriority HIGH 76
- TI-2026-51702 Budibase Server before 3.40.0 NoSQL Injection via JSON ParameterPriority HIGH 73
Timeline
- 2026-10-02 Threatist record created from CVE-2026-72855
- 2026-10-03 Alias added: GHSA-9x7q-v2pf-x72v
References
More Budibase vulnerabilities
- TI-2026-39242 Budibase: Anonymous NoSQL operator injection via published-app query templates CVSS 3.1CRITICAL 10.0
- TI-2026-51076 Budibase before 3.40.0 SQL Injection via Unauthenticated Webhook CVSS 4.0CRITICAL 9.0
- TI-2026-24369 Budibase Universal Auth Bypass via Webhook Query Param Injection CVSS 3.1CRITICAL 9.1
- TI-2026-56709 Budibase before 3.41.3 Remote Code Execution via Plugin eval() CVSS 4.0CRITICAL 9.4
- TI-2026-51425 Budibase: SQL Injection via `multipleStatements: true` CVSS 3.1CRITICAL 9.6
- TI-2026-51075 Budibase before 3.40.0 Arbitrary File Write via Path Traversal CVSS 4.0CRITICAL 9.4
Sources
- CVE-2026-72855 · CVE Program
- CVE-2026-72855 · NVD
- FIRST EPSS
- GHSA-9x7q-v2pf-x72v · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences