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: 0.2%, top 86% of all CVEs by exploit prediction. 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%CVSS: 8.2Exploit: None knownExposed: 0

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

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
8.2(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 12, 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
github Patch Available

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 / EcosystemFixed in / 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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 27× in last 7d / 67× 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. 2026-08-26 21:57 UTCEG score recompute
  2. 2026-08-26 21:57 UTCGHSA enrichment
  3. 2026-08-26 14:47 UTCEPSS rescore
  4. 2026-08-26 10:36 UTCGHSA enrichment
  5. 2026-08-25 23:25 UTCEG score recompute
  6. 2026-08-25 23:24 UTCGHSA enrichment
  7. 2026-08-25 13:49 UTCEPSS rescore
  8. 2026-08-25 12:16 UTCGHSA enrichment
  9. 2026-08-25 01:06 UTCEG score recompute
  10. 2026-08-25 01:06 UTCGHSA enrichment
  11. 2026-08-24 13:58 UTCEG score recompute
  12. 2026-08-24 13:58 UTCGHSA enrichment
  13. 2026-08-24 02:50 UTCGHSA enrichment
  14. 2026-08-23 15:41 UTCGHSA enrichment
  15. 2026-08-23 04:32 UTCEG score recompute
  16. 2026-08-23 04:32 UTCGHSA enrichment
  17. 2026-08-23 00:19 UTCEPSS rescore
  18. 2026-08-22 17:24 UTCGHSA enrichment
  19. 2026-08-22 06:15 UTCEG score recompute
  20. 2026-08-22 06:15 UTCGHSA enrichment
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-21 19:04 UTCGHSA enrichment
  23. 2026-08-21 07:55 UTCEG score recompute
  24. 2026-08-21 07:55 UTCGHSA enrichment
  25. 2026-08-20 22:56 UTCEPSS rescore
Show 42 more
  1. 2026-08-20 20:46 UTCGHSA enrichment
  2. 2026-08-20 09:37 UTCGHSA enrichment
  3. 2026-08-19 22:29 UTCEG score recompute
  4. 2026-08-19 22:29 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-19 11:20 UTCGHSA enrichment
  7. 2026-08-19 00:11 UTCEG score recompute
  8. 2026-08-19 00:11 UTCGHSA enrichment
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-18 13:03 UTCGHSA enrichment
  12. 2026-08-18 01:54 UTCGHSA enrichment
  13. 2026-08-17 14:46 UTCEG score recompute
  14. 2026-08-17 14:46 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 03:38 UTCGHSA enrichment
  17. 2026-08-16 16:30 UTCEG score recompute
  18. 2026-08-16 16:30 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 05:21 UTCEG score recompute
  22. 2026-08-16 05:21 UTCGHSA enrichment
  23. 2026-08-16 02:15 UTCEPSS rescore
  24. 2026-08-15 18:13 UTCGHSA enrichment
  25. 2026-08-15 07:04 UTCEG score recompute
  26. 2026-08-15 07:04 UTCGHSA enrichment
  27. 2026-08-15 01:31 UTCEPSS rescore
  28. 2026-08-14 19:55 UTCGHSA enrichment
  29. 2026-08-14 08:47 UTCEG score recompute
  30. 2026-08-14 08:47 UTCGHSA enrichment
  31. 2026-08-13 22:00 UTCEPSS rescore
  32. 2026-08-13 21:38 UTCGHSA enrichment
  33. 2026-08-13 10:30 UTCGHSA enrichment
  34. 2026-08-12 23:22 UTCEG score recompute
  35. 2026-08-12 23:22 UTCGHSA enrichment
  36. 2026-08-12 22:21 UTCEG score recompute
  37. 2026-08-12 22:21 UTCGHSA enrichment
  38. 2026-08-12 20:20 UTCEG score recompute
  39. 2026-08-12 20:20 UTCGHSA enrichment
  40. 2026-08-12 19:21 UTCEG score recompute
  41. 2026-08-12 19:21 UTCGHSA enrichment
  42. 2026-08-12 19:20 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database on August 12, 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% probability of exploitation in the next 30 days, which ranks it in the top 86.2% of all scored CVEs.
What is the CVSS score of CVE-2026-73303?
CVE-2026-73303 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-73303?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73303, 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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