EUVD-2026-87658
GHSA-j425-cpch-6j4p
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/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
Network-reachable API callable by a low-privilege builder (PR:L) with no interaction; scope change (S:C) as data crosses workspace authorization boundary; confidentiality-only (C:H), no integrity or availability impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
6DescriptionCVE.org
Budibase before 3.45.0 fails to properly scope the GET /api/chat-links endpoint by workspace, allowing builders to enumerate chat identity link records across all workspaces in a tenant. Attackers with builder access to a single workspace can retrieve sensitive chat identity linking data including user IDs and external chat service identifiers from other workspaces they have no permission to access.
AnalysisAI
Broken workspace-level authorization in the Budibase server component before 3.45.0 allows an authenticated user holding builder access to a single workspace to enumerate chat identity link records belonging to every other workspace in the same tenant via a GET request to /api/chat-links. Exploitation discloses user IDs and external chat service identifiers for workspaces the builder is not permitted to access, but is read-only with no integrity or availability impact and no cross-tenant reach. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated account with builder-level access to at least one workspace within the target Budibase tenant (PR:L) - this is not remotely exploitable by an anonymous attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but moderate-priority authorization flaw (CWE-863 / IDOR), not a high-CVSS-but-hollow issue nor a top-tier emergency. … 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 | Vendor-released patch: upgrade Budibase server to 3.45.0 or later, which is the version boundary at which the /api/chat-links endpoint is correctly scoped by workspace; the fix and affected-range details are published in the vendor advisory https://github.com/Budibase/budibase/security/advisories/GHSA-76m3-47v8-p7h6, with corroborating information at https://www.vulncheck.com/advisories/budibase-before-3.45.0-information-disclosure-via-chat-links. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Budibase server deployments and identify any running versions before 3.45.0, prioritizing multi-workspace tenants; restrict builder privileges to only trusted personnel and review logs for GET /api/chat-links requests. …
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Same weakness CWE-863 – Incorrect Authorization
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External POC / Exploit Code
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