CVE-2026-72856 (GCVE-0-2026-72856)
Vulnerability from cvelistv5 – Published: 2026-08-13 21:54 – Updated: 2026-08-13 21:54
VLAI
EPSS
VEX
Title
Budibase before 3.40.0 Authentication Bypass via Tenant Owner Email
Summary
Budibase versions before 3.40.0 contain an authorization/authentication bypass in the PUT /api/global/users/tenant/owner (changeTenantOwnerEmail) endpoint. On self-hosted instances (SELF_HOSTED or DISABLE_ACCOUNT_PORTAL set), the cloudRestricted middleware is a no-op and the route is protected only by a general authentication check, so any authenticated user — including a lowest-privilege BASIC app user — can reassign the tenant account-holder (top-privilege admin) email to an attacker-controlled address. The attacker can then use the public password-reset flow to take over the admin account, leading to full administrative access.
Severity
CWE
- CWE-640 - Weak Password Recovery Mechanism for Forgotten Password
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Budibase/budibase/security/adv… | vendor-advisory |
| https://www.vulncheck.com/advisories/budibase-bef… | third-party-advisory |
Impacted products
Date Public
2026-07-22 00:00
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},
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}
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"problemTypes": [
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"descriptions": [
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"description": "Weak Password Recovery Mechanism for Forgotten Password",
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"providerMetadata": {
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"url": "https://github.com/Budibase/budibase/security/advisories/GHSA-j82g-67x3-xcwh"
},
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],
"url": "https://www.vulncheck.com/advisories/budibase-before-authentication-bypass-via-tenant-owner-email"
}
],
"title": "Budibase before 3.40.0 Authentication Bypass via Tenant Owner Email",
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"cveMetadata": {
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"cveId": "CVE-2026-72856",
"datePublished": "2026-08-13T21:54:45.304Z",
"dateReserved": "2026-08-10T15:16:31.371Z",
"dateUpdated": "2026-08-13T21:54:45.304Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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