CVE-2026-72856

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-14. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 17, 2026

Advisory Details (2)

Auto-updated Aug 13, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Budibase before 3.40.0 Authentication Bypass via Tenant Owner Email | Advisories | VulnCheck

https://www.vulncheck.com/advisories/budibase-before-authentication-bypass-via-tenant-owner-email
github Patch Available🟡 PoC Available

Any authenticated user (incl. BASIC) can change the account-holder/admin email · Advisory · Budibase/budibase · GitHub

https://github.com/Budibase/budibase/security/advisories/GHSA-j82g-67x3-xcwh

Vendor Advisories for CVE-2026-72856(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 30× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 19:03 UTCGHSA enrichment
  3. 2026-08-20 06:45 UTCGHSA enrichment
  4. 2026-08-19 18:26 UTCEG score recompute
  5. 2026-08-19 18:26 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 05:23 UTCGHSA enrichment
  8. 2026-08-18 17:04 UTCEG score recompute
  9. 2026-08-18 17:04 UTCGHSA enrichment
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 04:43 UTCGHSA enrichment
  13. 2026-08-17 16:25 UTCEG score recompute
  14. 2026-08-17 16:25 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 12:33 UTCGHSA enrichment
  17. 2026-08-17 00:14 UTCEG score recompute
  18. 2026-08-17 00:14 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 11:56 UTCEG score recompute
  22. 2026-08-16 11:56 UTCGHSA enrichment
  23. 2026-08-16 02:15 UTCEPSS rescore
  24. 2026-08-15 23:38 UTCGHSA enrichment
  25. 2026-08-15 11:20 UTCEG score recompute
Show 8 more
  1. 2026-08-15 11:20 UTCGHSA enrichment
  2. 2026-08-15 01:31 UTCEPSS rescore
  3. 2026-08-14 23:02 UTCGHSA enrichment
  4. 2026-08-14 10:43 UTCEG score recompute
  5. 2026-08-14 10:43 UTCGHSA enrichment
  6. 2026-08-13 22:25 UTCEG score recompute
  7. 2026-08-13 22:09 UTCEG score recompute
  8. 2026-08-13 22:09 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72856?
CVE-2026-72856 is a high vulnerability published on August 13, 2026. 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 (SELFHOSTED or DISABLEACCOUNT_PORTAL set), the cloudRestricted middleware is a no-op and the route is protected only…
When was CVE-2026-72856 disclosed?
CVE-2026-72856 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72856 actively exploited?
CVE-2026-72856 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 74.2% of all scored CVEs.
What is the CVSS score of CVE-2026-72856?
CVE-2026-72856 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-72856?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72856, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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