CVE-2026-73303

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (21st percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.2EG
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: 8.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Budibase is an open-source low-code platform. Prior to 3.40.0, POST /api/v2/email on account.budibase.app accepted a client-controlled accountId without binding it to the authenticated session, while checking only currentEmail. An authenticated attacker who obtains a victim account identifier can start the email-change workflow for the victim, receive and submit the verification code through POST /api/v2/email/verification, move the victim email to an attacker-controlled address, and complete a password reset as the victim. This issue is fixed in version 3.40.0.

CVSS v3
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity82% × 45%
Exploitation0% × 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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 12, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 12, 2026
Patch available. Sources: github_release.
github_release Patch Available

3.40.0

Patch available: Budibase/budibase 3.40.0

https://github.com/Budibase/budibase/releases/tag/3.40.0
githubMentions a patch (unverified)

Email Change IDOR via POST /api/v2/email allows full Account Takeover (accountId not validated against session) · Advisory · Budibase/budibase · GitHub

https://github.com/Budibase/budibase/security/advisories/GHSA-c8vc-7pv3-g98p

Vendor Advisories for CVE-2026-73303(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npm@budibase/server—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

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 14× in last 7d / 88× 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 209 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-73303?
CVE-2026-73303 is a high vulnerability published on August 12, 2026. Budibase is an open-source low-code platform. Prior to 3.40.0, POST /api/v2/email on account.budibase.app accepted a client-controlled accountId without binding it to the authenticated session, while checking only currentEmail. An authenticated attacker who obtains a victim account identifier can…
When was CVE-2026-73303 disclosed?
CVE-2026-73303 was first published on August 12, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73303 actively exploited?
CVE-2026-73303 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-2026-73303?
CVE-2026-73303 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73303?
A fix for CVE-2026-73303 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73303 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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