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VulnerabilityPublished Updated

CVE-2026-54350: Server · Budibase has nonymous NoSQL operator injection via published-app query templates

Affects @budibase/serverSource GCVE Database

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Not known to be exploited · CVSS 10.0 Critical : upgrade to 3.39.12 as a priority.

Data as of 10 Nov 2026, 23:24 UTC

CVSS 3.1 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.39.12
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade @budibase/server to 3.39.12.

Affected software

ProductAffectedFixed in
npm@budibase/serverAffected
  • <3.39.12
Fixed in
  • 3.39.12

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available for Budibase server versions up to 3.39.0. Users should upgrade to a fixed version above 3.39.0 as soon as possible. Until patched, avoid setting non-SQL queries (MongoDB, CouchDB, Elasticsearch, DynamoDB-PartiQL, REST JSON) to the PUBLIC role in published apps to prevent unauthenticated access. The vendor advisory confirms the availability of an official fix. No other mitigations are indicated or effective given the nature of the vulnerability.

Description

Budibase server versions up to 3.39.0 contain a critical NoSQL operator injection vulnerability (CVE-2026-54350) in the handling of published-app query templates. This flaw allows unauthenticated users to bypass authentication and CSRF protections when queries are set to the PUBLIC role, enabling them to read or modify all documents in various NoSQL data sources such as MongoDB, CouchDB, Elasticsearch, DynamoDB-PartiQL, or REST JSON collections. The vulnerability arises from unsafe substitution of user input into JSON query bodies without proper escaping, combined with insufficient input validation and authorization checks. SQL datasources are not affected. A patch is available for this issue.

References

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