CVE-2026-72859

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-08-14. A secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.7Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Budibase versions 3.39.4 before 3.40.0 contain an authorization regression in the S3 attachment upload endpoint that allows BASIC users to obtain S3 PutObject presigned URLs by sending POST requests to the attachments endpoint. The route was changed from a BUILDER permission check to a TABLE/WRITE check, which BASIC users hold by default. Attackers can specify arbitrary S3 buckets in the request body to generate presigned URLs for writing to any bucket accessible by the stored IAM credentials, enabling unauthorized file uploads.

CVSS v3
7.7
EG Score
7.7HIGHmedium confidence
EG Risk
51
EG Risk 51/100CISA 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
Severity77% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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 14, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
Patch available. Sources: github.
generic

Budibase 3.39.4 before 3.40.0 Authorization Regression via S3 Presigned URL | Advisories | VulnCheck

https://www.vulncheck.com/advisories/budibase-before-authorization-regression-via-s3-presigned-url
github Patch Available

S3 presigned URL endpoint authorization regression in v3.39.4 allows BASIC users to obtain S3 PutObject presigned URLs · Advisory · Budibase/budibase · GitHub

https://github.com/Budibase/budibase/security/advisories/GHSA-xcx6-4f2g-hhgx

Vendor Advisories for CVE-2026-72859(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
@budibase/server—
  • every version through 3.38.1: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 94× 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 186 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-72859?
CVE-2026-72859 is a high vulnerability published on August 14, 2026. Budibase versions 3.39.4 before 3.40.0 contain an authorization regression in the S3 attachment upload endpoint that allows BASIC users to obtain S3 PutObject presigned URLs by sending POST requests to the attachments endpoint. The route was changed from a BUILDER permission check to a TABLE/WRITE…
When was CVE-2026-72859 disclosed?
CVE-2026-72859 was first published on August 14, 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-2026-72859 actively exploited?
CVE-2026-72859 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72859?
CVE-2026-72859 has a CVSS base score of 7.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72859?
A fix for CVE-2026-72859 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72859 are linked in the Vendor Advisories panel on this page.

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