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Budibase Server EUVDEUVD-2026-87660

| CVE-2026-100687 HIGH
Information Exposure (CWE-200)
2026-09-26 VulnCheck GHSA-qhcg-hgqm-ww52
7.0
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
7.0 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/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
vuln.today AI
4.9 MEDIUM

Builder role is a privileged collaborator role so PR:H; network-reachable websocket with no user interaction; confidentiality-only plaintext credential leak, no integrity or availability impact.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

5
POC Analysis Generated
Sep 26, 2026 - 15:28 vuln.today
Metadata Corrected
Sep 26, 2026 - 14:40 vuln.today
tag: Node.js added
Analysis Generated
Sep 26, 2026 - 14:19 vuln.today
Patch available
Sep 26, 2026 - 14:02 EUVD
CVE Published
Sep 26, 2026 - 13:23 cve.org
HIGH 7.0

DescriptionCVE.org

Budibase Server before 3.45.0 fails to redact plaintext datasource credentials before broadcasting external table updates to the Builder collaboration websocket room. Attackers with Builder access can intercept unredacted datasource objects containing database passwords and API keys by observing table save or delete operations.

AnalysisAI

Budibase Server before 3.45.0 fails to redact plaintext datasource credentials before broadcasting external table updates to the Builder collaboration websocket room, allowing anyone already holding Builder-level access to a workspace to passively capture database passwords and API keys whenever a collaborator saves or deletes a table on an external datasource. The exposure is confidentiality-dominant (CVSS 4.0 base 7.0; VC:H/VI:L/VA:N) and requires the privileged Builder role (PR:H) - it is not reachable by unauthenticated users or by low-privilege consumers of published apps. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Requires an account with Builder access to the target Budibase workspace and access to the Builder collaboration websocket room (the real-time co-editing channel). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The vendor CVSS 4.0 vector (7.0) rates this High, but the metrics themselves temper the real-world risk: exploitation requires PR:H (Builder-level access to the Budibase workspace), the impact is confidentiality-only with a slight integrity spillover (VC:H/VI:L/VA:N), and there is no scope change (SC:N/SI:N/SA:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Budibase Server to version 3.45.0 or later, the vendor-released fix that restores credential redaction on collaboration-room broadcasts, following the vendor advisory at https://github.com/Budibase/budibase/security/advisories/GHSA-rmv5-3xpj-w885 and the VulnCheck advisory at https://www.vulncheck.com/advisories/budibase-server-before-3.45.0-credential-exposure-via-external-table-broadcast. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all Budibase Server instances and confirm whether any run a version before 3.45.0; apply Vendor-released patch: 3.45.0 by upgrading to Budibase Server 3.45.0 or later where feasible, and if immediate upgrade is not possible, temporarily restrict Builder-role membership to essential personnel and review websocket collaboration exposure. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-87660 vulnerability details – vuln.today

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