CVE-2026-72856

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM 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: 0.5%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
8.1HIGHmedium confidence
EG Risk
41
EG Risk 41/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 13, 2026

Last Modified

August 31, 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 18× in last 7d / 93× 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.

Showing the most recent 100 of 185 total refreshes for this CVE.

  1. 2026-10-05 14:35 UTCEG score recompute
  2. 2026-10-05 14:35 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 22:15 UTCGHSA enrichment
  5. 2026-10-04 08:11 UTCGHSA enrichment
  6. 2026-10-03 19:44 UTCEG score recompute
  7. 2026-10-03 19:43 UTCGHSA enrichment
  8. 2026-10-03 14:26 UTCEPSS rescore
  9. 2026-10-02 19:45 UTCEG score recompute
  10. 2026-10-02 19:45 UTCGHSA enrichment
  11. 2026-10-02 07:26 UTCEG score recompute
  12. 2026-10-02 07:26 UTCGHSA enrichment
  13. 2026-10-01 19:50 UTCEPSS rescore
  14. 2026-10-01 10:02 UTCGHSA enrichment
  15. 2026-09-30 21:43 UTCEG score recompute
  16. 2026-09-30 21:43 UTCGHSA enrichment
  17. 2026-09-29 03:24 UTCEG score recompute
  18. 2026-09-29 03:24 UTCGHSA enrichment
  19. 2026-09-28 13:52 UTCEPSS rescore
  20. 2026-09-28 12:51 UTCGHSA enrichment
  21. 2026-09-28 00:33 UTCEG score recompute
  22. 2026-09-28 00:33 UTCGHSA enrichment
  23. 2026-09-27 13:48 UTCEPSS rescore
  24. 2026-09-27 09:40 UTCEG score recompute
  25. 2026-09-27 09:40 UTCGHSA enrichment
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescore
  2. 2026-09-25 03:25 UTCEG score recompute
  3. 2026-09-25 03:25 UTCGHSA enrichment
  4. 2026-09-24 09:52 UTCGHSA enrichment
  5. 2026-09-23 21:34 UTCEG score recompute
  6. 2026-09-23 21:34 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 09:16 UTCGHSA enrichment
  9. 2026-09-22 20:57 UTCEG score recompute
  10. 2026-09-22 20:57 UTCGHSA enrichment
  11. 2026-09-22 08:09 UTCEG score recompute
  12. 2026-09-22 08:09 UTCGHSA enrichment
  13. 2026-09-21 21:09 UTCEPSS rescore
  14. 2026-09-21 19:47 UTCGHSA enrichment
  15. 2026-09-21 04:15 UTCEG score recompute
  16. 2026-09-21 04:15 UTCGHSA enrichment
  17. 2026-09-20 20:16 UTCEPSS rescore
  18. 2026-09-20 15:42 UTCGHSA enrichment
  19. 2026-09-20 01:44 UTCEG score recompute
  20. 2026-09-20 01:44 UTCGHSA enrichment
  21. 2026-09-19 13:25 UTCGHSA enrichment
  22. 2026-09-19 01:07 UTCEG score recompute
  23. 2026-09-19 01:07 UTCGHSA enrichment
  24. 2026-09-18 19:28 UTCEPSS rescore
  25. 2026-09-18 12:48 UTCGHSA enrichment
  26. 2026-09-18 00:29 UTCEG score recompute
  27. 2026-09-18 00:29 UTCGHSA enrichment
  28. 2026-09-17 12:09 UTCGHSA enrichment
  29. 2026-09-16 23:50 UTCEG score recompute
  30. 2026-09-16 23:50 UTCGHSA enrichment
  31. 2026-09-16 14:08 UTCEPSS rescore
  32. 2026-09-16 10:47 UTCEG score recompute
  33. 2026-09-16 10:47 UTCGHSA enrichment
  34. 2026-09-16 05:15 UTCEPSS rescore
  35. 2026-09-15 22:27 UTCGHSA enrichment
  36. 2026-09-15 10:00 UTCEG score recompute
  37. 2026-09-15 10:00 UTCGHSA enrichment
  38. 2026-09-15 03:12 UTCEPSS rescore
  39. 2026-09-14 21:41 UTCGHSA enrichment
  40. 2026-09-14 08:47 UTCGHSA enrichment
  41. 2026-09-13 20:29 UTCEG score recompute
  42. 2026-09-13 20:29 UTCGHSA enrichment
  43. 2026-09-13 08:10 UTCEG score recompute
  44. 2026-09-13 08:10 UTCGHSA enrichment
  45. 2026-09-12 19:52 UTCEG score recompute
  46. 2026-09-12 19:52 UTCGHSA enrichment
  47. 2026-09-12 15:02 UTCEPSS rescore
  48. 2026-09-12 07:33 UTCGHSA enrichment
  49. 2026-09-11 19:13 UTCEG score recompute
  50. 2026-09-11 19:13 UTCGHSA enrichment
  51. 2026-09-11 14:53 UTCEPSS rescore
  52. 2026-09-11 06:52 UTCGHSA enrichment
  53. 2026-09-10 18:33 UTCEG score recompute
  54. 2026-09-10 18:33 UTCGHSA enrichment
  55. 2026-09-10 09:35 UTCEPSS rescore
  56. 2026-09-10 06:13 UTCGHSA enrichment
  57. 2026-09-09 17:41 UTCGHSA enrichment
  58. 2026-09-09 04:51 UTCEG score recompute
  59. 2026-09-09 04:51 UTCGHSA enrichment
  60. 2026-09-08 22:01 UTCEPSS rescore
  61. 2026-09-08 06:15 UTCGHSA enrichment
  62. 2026-09-07 17:55 UTCEG score recompute
  63. 2026-09-07 17:55 UTCGHSA enrichment
  64. 2026-09-07 05:36 UTCGHSA enrichment
  65. 2026-09-06 17:00 UTCEG score recompute
  66. 2026-09-06 17:00 UTCGHSA enrichment
  67. 2026-09-06 13:48 UTCEPSS rescore
  68. 2026-09-06 04:41 UTCGHSA enrichment
  69. 2026-09-05 16:23 UTCEG score recompute
  70. 2026-09-05 16:23 UTCGHSA enrichment
  71. 2026-09-05 04:04 UTCGHSA enrichment
  72. 2026-09-04 15:46 UTCEG score recompute
  73. 2026-09-04 15:46 UTCGHSA enrichment
  74. 2026-09-04 05:07 UTCEPSS rescore
  75. 2026-09-04 03:13 UTCGHSA enrichment

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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 on August 13, 2026, with the most recent update on August 31, 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 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72856?
CVE-2026-72856 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72856?
A fix for CVE-2026-72856 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72856 are linked in the Vendor Advisories panel on this page.

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