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VulnerabilityPublished Updated

CVE-2026-73618: budibase server · Improper Neutralization of Special Elements in Data Query Logic

Affects budibase serverSource CVE Database V5

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Not known to be exploited · CVSS 8.7 High : upgrade to 3.40.0 soon.

Data as of 12 Nov 2026, 23:24 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.40.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  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), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade server and budibase/budibase to 3.40.0.

Affected software

ProductAffectedFixed in
budibaseserverAffected
  • <3.40.0
Fixed in
  • 3.40.0
GitHubbudibase/budibasepkg:github/budibase/budibaseOther threatsAffected
  • <3.40.0
Fixed in
  • 3.40.0

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

AI-suggested

If you cannot patch yet, restrict query write permissions to trusted users only and monitor for suspicious query activity. Avoid exposing the MongoDB query execution endpoint to untrusted networks or users.

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.

References

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