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: 0.3%, top 76% 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 weekElevated
4.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.9Exploit: Elevated riskExposed: 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 3.39.4, 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
4.9(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity49% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 12, 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
github Patch Available🟡 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 / 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 19× in last 7d / 46× 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 21:39 UTCEG score recompute
  2. 2026-08-26 21:39 UTCGHSA enrichment
  3. 2026-08-26 14:47 UTCEPSS rescore
  4. 2026-08-25 19:39 UTCEG score recompute
  5. 2026-08-25 19:39 UTCGHSA enrichment
  6. 2026-08-25 13:49 UTCEPSS rescore
  7. 2026-08-24 17:42 UTCEG score recompute
  8. 2026-08-24 17:42 UTCGHSA enrichment
  9. 2026-08-23 15:46 UTCEG score recompute
  10. 2026-08-23 15:46 UTCGHSA enrichment
  11. 2026-08-23 00:19 UTCEPSS rescore
  12. 2026-08-22 13:50 UTCEG score recompute
  13. 2026-08-22 13:50 UTCGHSA enrichment
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 11:53 UTCEG score recompute
  16. 2026-08-21 11:53 UTCGHSA enrichment
  17. 2026-08-20 22:56 UTCEPSS rescore
  18. 2026-08-20 09:56 UTCEG score recompute
  19. 2026-08-20 09:56 UTCGHSA enrichment
  20. 2026-08-19 17:04 UTCEPSS rescore
  21. 2026-08-19 07:59 UTCEG score recompute
  22. 2026-08-19 07:59 UTCGHSA enrichment
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 13:49 UTCEPSS rescore
  25. 2026-08-18 06:03 UTCEG score recompute
Show 21 more
  1. 2026-08-18 06:03 UTCGHSA enrichment
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-17 04:07 UTCEG score recompute
  4. 2026-08-17 04:07 UTCGHSA enrichment
  5. 2026-08-16 14:56 UTCEPSS rescore
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 02:15 UTCEPSS rescore
  8. 2026-08-16 02:10 UTCEG score recompute
  9. 2026-08-16 02:10 UTCGHSA enrichment
  10. 2026-08-15 01:31 UTCEPSS rescore
  11. 2026-08-15 00:14 UTCGHSA enrichment
  12. 2026-08-13 22:17 UTCEG score recompute
  13. 2026-08-13 22:17 UTCGHSA enrichment
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-12 20:20 UTCEG score recompute
  16. 2026-08-12 20:20 UTCGHSA enrichment
  17. 2026-08-12 20:06 UTCEG score recompute
  18. 2026-08-12 20:06 UTCGHSA enrichment
  19. 2026-08-12 19:21 UTCEG score recompute
  20. 2026-08-12 19:21 UTCGHSA enrichment
  21. 2026-08-12 19:20 UTCMITRE cvelistV5first tracked

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 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-2026-73307 actively exploited?
CVE-2026-73307 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 76.4% of all scored CVEs.
What is the CVSS score of CVE-2026-73307?
CVE-2026-73307 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2026-73307?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73307, 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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