Budibase backend-core SSRF via incomplete default blacklist
Budibase backend-core (@budibase/backend-core, as used by @budibase/server) omits the shared address space range 100.64.0.0/10 from its default SSRF blacklist (DEFAULT_BLACKLIST) used by REST datasource query previews. When the default blacklist is active (i.e., a self-hosted deployment has not defined BLACKLIST_IPS), an authenticated user with the Builder permission can submit a REST datasource query preview request to POST /api/queries/preview targeting a reachable HTTP(S) service in the 100.64.0.0/10 range, causing the server to send a request to that target and return its response through the preview flow. Per the advisory, no released fix was identified at the time of publication; remediation is to add 100.64.0.0/10 to DEFAULT_BLACKLIST.
CVE-2026-82241
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-82241
server
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "budibase",
"product": "server",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "3.41.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "3.41.3",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/%40budibase/server",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-82241
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #12908 · Revision 1
- Added to Heist Feed
- Publisher date