Budibase is an open-source low-code platform. Prior to 3.40.0, packages/backend-core/src/utils/outboundFetch.ts pinned a validated address through a Node agent, but the REST integration used getDispatcher from packages/backend-core/src/utils/fetch.ts, causing undici to ignore that agent and resolve the hostname again. A builder could use DNS rebinding to make packages/server/src/integrations/rest.ts connect to an internal address after a public address passed validation, with full response access and arbitrary REST methods. The fix adds createPinnedLookup support to the undici dispatcher and passes the validated address to custom fetch implementations. This issue is fixed in version 3.40.0.
Project Subscriptions
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Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-v42f-v8xc-j435 | Budibase: SSRF via DNS rebinding in the REST datasource integration |
Fixes
Solution
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Workaround
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References
History
Mon, 17 Aug 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Budibase is an open-source low-code platform. Prior to 3.40.0, packages/backend-core/src/utils/outboundFetch.ts pinned a validated address through a Node agent, but the REST integration used getDispatcher from packages/backend-core/src/utils/fetch.ts, causing undici to ignore that agent and resolve the hostname again. A builder could use DNS rebinding to make packages/server/src/integrations/rest.ts connect to an internal address after a public address passed validation, with full response access and arbitrary REST methods. The fix adds createPinnedLookup support to the undici dispatcher and passes the validated address to custom fetch implementations. This issue is fixed in version 3.40.0. | |
| Title | Budibase: SSRF via DNS rebinding in the REST datasource integration | |
| Weaknesses | CWE-367 CWE-918 |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-17T20:27:24.080Z
Reserved: 2026-08-12T14:32:11.795Z
Link: CVE-2026-73410
No data.
Status : Received
Published: 2026-08-17T21:16:48.823
Modified: 2026-08-17T21:16:48.823
Link: CVE-2026-73410
No data.
OpenCVE Enrichment
No data.
Github GHSA