CVE-2026-73307

MEDIUMPre-NVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (34th 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 weekElevated
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.9Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Budibase is an open-source low-code platform. Prior to 3.39.4, uploadUrl in packages/server/src/utilities/fileUtils.ts used a bare server-side fetch for string attachment values passed by processAttachments in packages/server/src/sdk/workspace/ai/helpers/rows.ts. A builder with the AI table-generation feature could cause an attachment value to reference an internal service or cloud metadata endpoint, and the response would be stored as an attachment without fetchWithBlacklist validation. This issue is fixed in version 3.39.4.

CVSS v3
4.9
EG Score
4.9MEDIUMmedium confidence
EG Risk
38
EG Risk 38/100CISA 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
Severity49% × 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
0.4%
EPSS %ILE
35th
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 12, 2026

Last Modified

September 8, 2026

Advisory Details (4)

Auto-updated Aug 12, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available

3.39.4

Patch available: Budibase/budibase 3.39.4

https://github.com/Budibase/budibase/releases/tag/3.39.4
github_commit Patch Available

commit fc8161e739bd (Budibase/budibase)

Patch available: Budibase/budibase 3.39.9 (contains commit fc8161e739bd)

https://github.com/Budibase/budibase/commit/fc8161e739bdc5513c4314282251e327e7fe339f
github_pr Patch Available

Fix SSRF in AI table generation uploadUrl fetch path

Patch available: Budibase/budibase 3.39.9 (PR #18866 merged 2026-05-28)

https://github.com/Budibase/budibase/pull/18866
githubMentions a patch (unverified)🟡 PoC Available

SSRF via bare fetch() in uploadUrl during AI table generation · Advisory · Budibase/budibase · GitHub

https://github.com/Budibase/budibase/security/advisories/GHSA-hfhx-w8p8-4hc7

Vendor Advisories for CVE-2026-73307(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 10× in last 7d / 61× 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 142 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. 2026-10-06 17:25 UTCEG score recompute
  6. 2026-10-06 17:25 UTCGHSA enrichment
  7. 2026-10-06 15:18 UTCEPSS rescore
  8. 2026-10-05 17:43 UTCEPSS rescore
  9. 2026-10-04 23:22 UTCEPSS rescore
  10. 2026-10-04 22:29 UTCGHSA enrichment
  11. 2026-10-03 19:57 UTCEG score recompute
  12. 2026-10-03 19:57 UTCGHSA enrichment
  13. 2026-10-03 14:26 UTCEPSS rescore
  14. 2026-10-02 08:20 UTCEG score recompute
  15. 2026-10-02 08:20 UTCGHSA enrichment
  16. 2026-10-01 19:50 UTCEPSS rescore
  17. 2026-09-30 21:54 UTCEG score recompute
  18. 2026-09-30 21:54 UTCGHSA enrichment
  19. 2026-09-29 15:24 UTCEPSS rescore
  20. 2026-09-28 13:52 UTCEPSS rescore
  21. 2026-09-28 12:33 UTCEG score recompute
  22. 2026-09-28 12:33 UTCGHSA enrichment
  23. 2026-09-27 13:48 UTCEPSS rescore
  24. 2026-09-27 09:53 UTCEG score recompute
  25. 2026-09-27 09:53 UTCGHSA enrichment
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescore
  2. 2026-09-25 03:40 UTCEG score recompute
  3. 2026-09-25 03:40 UTCGHSA enrichment
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 13:45 UTCEG score recompute
  6. 2026-09-23 13:45 UTCGHSA enrichment
  7. 2026-09-22 11:48 UTCEG score recompute
  8. 2026-09-22 11:48 UTCGHSA enrichment
  9. 2026-09-21 21:09 UTCEPSS rescore
  10. 2026-09-21 09:50 UTCEG score recompute
  11. 2026-09-21 09:50 UTCGHSA enrichment
  12. 2026-09-20 20:16 UTCEPSS rescore
  13. 2026-09-20 06:12 UTCEG score recompute
  14. 2026-09-20 06:11 UTCGHSA enrichment
  15. 2026-09-19 04:14 UTCEG score recompute
  16. 2026-09-19 04:14 UTCGHSA enrichment
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-18 02:17 UTCEG score recompute
  19. 2026-09-18 02:17 UTCGHSA enrichment
  20. 2026-09-17 00:20 UTCEG score recompute
  21. 2026-09-17 00:20 UTCGHSA enrichment
  22. 2026-09-16 14:08 UTCEPSS rescore
  23. 2026-09-16 05:15 UTCEPSS rescore
  24. 2026-09-15 13:12 UTCEG score recompute
  25. 2026-09-15 13:12 UTCGHSA enrichment
  26. 2026-09-15 03:12 UTCEPSS rescore
  27. 2026-09-14 09:35 UTCEG score recompute
  28. 2026-09-14 09:35 UTCGHSA enrichment
  29. 2026-09-13 07:39 UTCEG score recompute
  30. 2026-09-13 07:39 UTCGHSA enrichment
  31. 2026-09-12 15:02 UTCEPSS rescore
  32. 2026-09-12 05:42 UTCEG score recompute
  33. 2026-09-12 05:42 UTCGHSA enrichment
  34. 2026-09-11 14:53 UTCEPSS rescore
  35. 2026-09-11 03:44 UTCEG score recompute
  36. 2026-09-11 03:44 UTCGHSA enrichment
  37. 2026-09-10 09:35 UTCEPSS rescore
  38. 2026-09-10 01:47 UTCEG score recompute
  39. 2026-09-10 01:47 UTCGHSA enrichment
  40. 2026-09-08 22:01 UTCEPSS rescore
  41. 2026-09-08 21:18 UTCGHSA enrichment
  42. 2026-09-07 16:42 UTCEG score recompute
  43. 2026-09-07 16:42 UTCGHSA enrichment
  44. 2026-09-06 13:48 UTCEPSS rescore
  45. 2026-09-06 05:20 UTCEG score recompute
  46. 2026-09-06 05:20 UTCGHSA enrichment
  47. 2026-09-05 03:24 UTCEG score recompute
  48. 2026-09-05 03:24 UTCGHSA enrichment
  49. 2026-09-04 05:07 UTCEPSS rescore
  50. 2026-09-04 01:27 UTCGHSA enrichment
  51. 2026-09-02 23:29 UTCEG score recompute
  52. 2026-09-02 23:29 UTCGHSA enrichment
  53. 2026-09-02 14:12 UTCEPSS rescore
  54. 2026-09-01 15:15 UTCEG score recompute
  55. 2026-09-01 15:15 UTCGHSA enrichment
  56. 2026-09-01 13:54 UTCEPSS rescore
  57. 2026-09-01 04:40 UTCEPSS rescore
  58. 2026-09-01 04:40 UTCEPSS rescore
  59. 2026-08-31 12:38 UTCEG score recompute
  60. 2026-08-31 12:37 UTCGHSA enrichment
  61. 2026-08-30 19:18 UTCEPSS rescore
  62. 2026-08-30 19:17 UTCEPSS rescore
  63. 2026-08-30 10:32 UTCEG score recompute
  64. 2026-08-30 10:31 UTCGHSA enrichment
  65. 2026-08-30 01:22 UTCEPSS rescore
  66. 2026-08-29 08:34 UTCEG score recompute
  67. 2026-08-29 08:34 UTCGHSA enrichment
  68. 2026-08-28 21:42 UTCEPSS rescore
  69. 2026-08-27 23:41 UTCEG score recompute
  70. 2026-08-27 23:41 UTCGHSA enrichment
  71. 2026-08-27 14:25 UTCEPSS rescore
  72. 2026-08-26 21:39 UTCEG score recompute
  73. 2026-08-26 21:39 UTCGHSA enrichment
  74. 2026-08-26 14:47 UTCEPSS rescore
  75. 2026-08-25 19:39 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-73307?
CVE-2026-73307 is a medium vulnerability published on August 12, 2026. Budibase is an open-source low-code platform. Prior to 3.39.4, uploadUrl in packages/server/src/utilities/fileUtils.ts used a bare server-side fetch for string attachment values passed by processAttachments in packages/server/src/sdk/workspace/ai/helpers/rows.ts. A builder with the AI…
When was CVE-2026-73307 disclosed?
CVE-2026-73307 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-2026-73307 actively exploited?
CVE-2026-73307 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73307?
CVE-2026-73307 has a CVSS base score of 4.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73307?
A fix for CVE-2026-73307 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73307 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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