CVE-2026-73409

MEDIUMPre-NVD 5.15.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 91% 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
5.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.1Exploit: 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 3.40.1, packages/server/src/integrations/mongodb.ts passed builder-controlled tlsCertificateKeyFile and tlsCAFile values directly to MongoClient on Budibase Cloud. A builder could submit absolute server paths through /api/datasources/verify and distinguish readable existing files from missing files by comparing the driver error, exposing a filesystem existence and readability oracle on the shared server. This issue is fixed in version 3.40.1.

CVSS v3
5.1
EG Score
5.1(medium)
EG Risk
54(Attend)
EG Risk 54/100SSVC: Attend

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
Severity51% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

July 24, 2026

Last Modified

August 14, 2026

Advisory Details (4)

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

3.40.1

Patch available: Budibase/budibase 3.40.1

https://github.com/Budibase/budibase/releases/tag/3.40.1
github_commit Patch Available

commit e58aa31e1827 (Budibase/budibase)

Patch available: Budibase/budibase 3.40.1 (contains commit e58aa31e1827)

https://github.com/Budibase/budibase/commit/e58aa31e18272f6a1a8aeb525b7eef0b01b1dd43
github_pr Patch Available

[VULN-118] Stop forwarding MongoDB TLS file paths on Cloud

Patch available: Budibase/budibase 3.40.1 (PR #19244 merged 2026-07-22)

https://github.com/Budibase/budibase/pull/19244
github Patch Available🟡 PoC Available

Server Filesystem Existence/Read Oracle via Builder-Controlled MongoDB tlsCertificateKeyFile · Advisory · Budibase/budibase · GitHub

https://github.com/Budibase/budibase/security/advisories/GHSA-ppr4-5f46-j9c6

Vendor Advisories for CVE-2026-73409(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.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@budibase/server———

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 47× 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 14:47 UTCEPSS rescore
  2. 2026-08-26 10:44 UTCEG score recompute
  3. 2026-08-26 10:44 UTCGHSA enrichment
  4. 2026-08-25 13:49 UTCEPSS rescore
  5. 2026-08-25 09:45 UTCEG score recompute
  6. 2026-08-25 09:45 UTCGHSA enrichment
  7. 2026-08-24 08:45 UTCGHSA enrichment
  8. 2026-08-23 07:32 UTCEG score recompute
  9. 2026-08-23 07:32 UTCGHSA enrichment
  10. 2026-08-23 00:19 UTCEPSS rescore
  11. 2026-08-22 06:33 UTCEG score recompute
  12. 2026-08-22 06:33 UTCGHSA enrichment
  13. 2026-08-21 23:49 UTCEPSS rescore
  14. 2026-08-21 05:34 UTCEG score recompute
  15. 2026-08-21 05:34 UTCGHSA enrichment
  16. 2026-08-20 22:56 UTCEPSS rescore
  17. 2026-08-20 04:35 UTCEG score recompute
  18. 2026-08-20 04:35 UTCGHSA enrichment
  19. 2026-08-19 17:04 UTCEPSS rescore
  20. 2026-08-19 03:35 UTCEG score recompute
  21. 2026-08-19 03:35 UTCGHSA enrichment
  22. 2026-08-18 13:49 UTCEPSS rescore
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 01:26 UTCEG score recompute
  25. 2026-08-18 01:26 UTCGHSA enrichment
Show 22 more
  1. 2026-08-17 13:47 UTCEPSS rescore
  2. 2026-08-17 00:17 UTCEG score recompute
  3. 2026-08-17 00:17 UTCGHSA enrichment
  4. 2026-08-16 14:56 UTCEPSS rescore
  5. 2026-08-16 14:56 UTCEPSS rescore
  6. 2026-08-16 02:15 UTCEPSS rescore
  7. 2026-08-15 23:18 UTCEG score recompute
  8. 2026-08-15 23:18 UTCGHSA enrichment
  9. 2026-08-15 01:31 UTCEPSS rescore
  10. 2026-08-14 22:18 UTCEG score recompute
  11. 2026-08-14 22:18 UTCGHSA enrichment
  12. 2026-08-14 22:14 UTCEG score recompute
  13. 2026-08-14 22:14 UTCGHSA enrichment
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 21:20 UTCGHSA enrichment
  16. 2026-08-12 20:21 UTCEG score recompute
  17. 2026-08-12 20:21 UTCGHSA enrichment
  18. 2026-08-12 19:46 UTCEG score recompute▲ 5.10
  19. 2026-08-12 19:46 UTCGHSA enrichment
  20. 2026-08-12 19:45 UTCMITRE cvelistV5CVSS v3 → 5.1 · CVSS v4 → 5.1 · severity → MEDIUM
  21. 2026-08-12 19:21 UTCEG score recompute
  22. 2026-08-12 19:21 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-73409?
CVE-2026-73409 is a medium vulnerability published on July 24, 2026. Budibase is an open-source low-code platform. Prior to 3.40.1, packages/server/src/integrations/mongodb.ts passed builder-controlled tlsCertificateKeyFile and tlsCAFile values directly to MongoClient on Budibase Cloud. A builder could submit absolute server paths through /api/datasources/verify and…
When was CVE-2026-73409 disclosed?
CVE-2026-73409 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73409 actively exploited?
CVE-2026-73409 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 91.2% of all scored CVEs.
What is the CVSS score of CVE-2026-73409?
CVE-2026-73409 has a CVSS v3 base score of 5.1 (NVD).
How do I remediate CVE-2026-73409?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73409, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73409

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