CVE-2026-73407Public exploitNetwork attack vector

Unauthenticated credential theft via cross-origin REST request

Published Aug 12, 2026 · Updated Aug 12, 2026

Credential disclosure in Budibase before 3.40.1 allows remote attackers to steal REST datasource secrets through a public query. RestIntegration._req merges getAuthHeaders and defaultHeaders into requests before getUrl resolves the destination, without enforcing the datasource origin. A query must be published with the PUBLIC role and accept an absolute or parameterized path; one unauthenticated request exposes bearer, basic, or static-header credentials.

CVSS severity9.0
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential disclosure in Budibase before 3.40.1 allows remote attackers to steal REST datasource secrets through a public query. RestIntegration._req merges getAuthHeaders and defaultHeaders into requests before getUrl resolves the destination, without enforcing the datasource origin. A query must be published with the PUBLIC role and accept an absolute or parameterized path; one unauthenticated request exposes bearer, basic, or static-header credentials.

The record

CVE
CVE-2026-73407
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
Budibase
Product
Budibase
Classifications
CWE-22, T1528
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

Budibase · Budibaseversion=< 3.40.1

Published CVSS scores

9.0GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1528Steal Application Access Token

Public exploit references

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Technologies

Your stack

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Your stack

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