Vulnerability in Budibase Server (CVE-2026-73618)
Summary
Vulnerability in Budibase Server (CVE-2026-73618). Confidential information can be exposed externally.
Original description
The description as published by the source.
Summary
Budibase's MongoDB query execution endpoint (POST /api/v2/queries/:queryId) is vulnerable to NoSQL injection through user-supplied query parameters. The enrichContext() function interpolates parameter values into JSON query templates using Handlebars with noEscaping: true, then parses the result with JSON.parse(). An attacker can inject JSON metacharacters (", {, }) into parameter values to alter the structure of MongoDB queries, bypassing intended filters to read, modify, or delete arbitrary documents.
Details
The vulnerability exists because input validation and interpolation are misaligned. The validateQueryInputs() function blocks Handlebars template syntax ({{}}) but does not sanitize JSON structural characters:
packages/server/src/api/controllers/query/index.ts:57-69
function validateQueryInputs(parameters: QueryEventParameters) {
for (let entry of Object.entries(parameters)) {
const [key, value] = entry
if (typeof value !== "string") {
continue
}
if (findHBSBlocks(value).length !== 0) {
throw new Error(
`Parameter '${key}' input contains a handlebars binding - this is not allowed.`
)
}
}
}
After validation passes, enrichContext() performs raw string interpolation with escaping explicitly disabled:
packages/server/src/sdk/workspace/queries/queries.ts:105-108
enrichedQuery[key] = processStringSync(fields[key], parameters, {
noEscaping: true,…
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-73618 has been found in Budibase Server.
Confidential information can be exposed externally. CVSS score: 8.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Budibase Server CVE-2026-73618" on the vendor's site.
CVE-2026-73618 (Budibase Server) — CWE-943 / CVSS v3 8.3
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-943) exists in Budibase Server.
Check the vendor advisory for the affected versions of Budibase Server.
Severity: High (CVSS 8.3/10). Confidential information can be exposed externally.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Budibase Server を使っているサービスとバージョンを洗い出す。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- package github.com
- web github.com
- web nvd.nist.gov
- web disclosure@vulncheck.com
- web github.com
- web github.com
- web github.com
- web github.com