CVE-2026-72856Public exploitNetwork attack vectorHinoki check available

Authenticated admin takeover via owner email reassignment

Published Aug 13, 2026 · Updated Aug 13, 2026

Authorization bypass in Budibase before 3.40.0 allows remote authenticated users to reassign the tenant account-holder email. The changeTenantOwnerEmail route lacks a role check, and cloudRestricted becomes a no-op on self-hosted instances before saving the supplied address as the account holder. Any BASIC app user can perform the reassignment; administrative takeover additionally requires a working password-reset email flow.

CVSS severity8.6
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authorization bypass in Budibase before 3.40.0 allows remote authenticated users to reassign the tenant account-holder email. The changeTenantOwnerEmail route lacks a role check, and cloudRestricted becomes a no-op on self-hosted instances before saving the supplied address as the account holder. Any BASIC app user can perform the reassignment; administrative takeover additionally requires a working password-reset email flow.

The record

CVE
CVE-2026-72856
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Budibase
Product
Budibase
Classifications
CWE-640, CWE-862, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 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=0 <3.40.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Budibase · Budibaseversion=0 <3.40.0

Published CVSS scores

8.1GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.6VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

CWE-640Weak Password Recovery Mechanism for Forgotten Password
CWE-862Missing Authorization
T1098Account Manipulation

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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