CVE-2026-73409Public exploitNetwork attack vector

Authenticated file-read oracle via MongoDB TLS paths

Published Aug 12, 2026 · Updated Aug 12, 2026

Path-based information disclosure in Budibase before 3.40.1 allows remote authenticated users to test server file readability. The MongoDB integration passes builder-supplied tlsCertificateKeyFile and tlsCAFile paths to MongoClient, whose file reads return distinguishable errors. A builder account on Budibase Cloud can enumerate readable paths across the shared server; ordinary file contents are not returned by the oracle.

CVSS severity5.1
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path-based information disclosure in Budibase before 3.40.1 allows remote authenticated users to test server file readability. The MongoDB integration passes builder-supplied tlsCertificateKeyFile and tlsCAFile paths to MongoClient, whose file reads return distinguishable errors. A builder account on Budibase Cloud can enumerate readable paths across the shared server; ordinary file contents are not returned by the oracle.

The record

CVE
CVE-2026-73409
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
Budibase
Product
Budibase
Classifications
T1083
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.40.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Budibase · Budibaseversion=< 3.40.1

Published CVSS scores

5.1INCIBE-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1083File and Directory Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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