CVE-2026-72855 json
Budibase before 3.40.0 DNS Rebinding SSRF via OpenAPI and REST
published 3mo ago modified last mo. also EUVD-2026-58504 , GHSA-xg5g-26x8-cvf4
- cvss
- 8.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 31%
- public exploits
- 0
- none known
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.
Patch / fix
- budibase server 3.40.0
Is CVE-2026-72855 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.4 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N |
| CNA | 3.1 | 8.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
| GitHub | 3.1 | 8.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
| CNA | 4.0 | 8.4 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @budibase/server | <=3.38.1 |
no fix listed |
Affected products
- budibase server
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/Budibase/budibase/pull/19178
web
-
github.com
/Budibase/budibase/commit/1fecb3fc3497e8db7b60b42cc514ce304ffe3a41
web
-
github.com
/Budibase/budibase/commit/5758bdb242802ca20c4ed0dc579e4330ee898ef3
web
-
github.com
/Budibase/budibase/commit/586802b5706367520d14245e18a7d0cabab0be11
web
-
github.com
/Budibase/budibase/security/advisories/GHSA-xg5g-26x8-cvf4
vendor-advisory, web
-
vulncheck.com
/advisories/budibase-before-dns-rebinding-ssrf-via-openapi-and-rest
third-party-advisory
-
github.com
/Budibase/budibase
package
-
github.com
/Budibase/budibase/releases/tag/3.39.30
web
Sources
- CVE List CVE-2026-72855
- GitHub Advisory GHSA-xg5g-26x8-cvf4
- NVD CVE-2026-72855
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.