Vulnerability · Published Aug 13, 2026 · Assigned by VulnCheck

CVE-2026-73618Budibase Server before 3.40.0 NoSQL Injection via JSON Parameter

High 8.3

In plain English

A high-severity security flaw in server from budibase. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)8.3High

Exploit odds (30 days)0.4%top 69.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Budibase Server before 3.40.0 contains a NoSQL injection vulnerability in the MongoDB query execution endpoint where user-supplied parameters are interpolated into JSON query templates without proper sanitization of JSON metacharacters. Attackers with query write permission can inject JSON structural characters to alter MongoDB queries, bypassing filters to read, modify, or delete arbitrary documents.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@budibase/server	no fix listed	GHSA-qw6m-8fw2-2v64

Affected products (as reported)

Vendor	Product	Versions
budibase	server	0 – before 3.40.0

Weakness: CWE-943 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

References

GitHub Security Advisory (GHSA-qw6m-8fw2-2v64) vendor-advisory
VulnCheck Advisory: Budibase Server before 3.40.0 NoSQL Injection via JSON Parameter third-party-advisory