CVE-2026-14538

HIGHNVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

Score 7.7 from GitHub Security Advisory published 2026-07-31. NVD baseline CVSS 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An improper authorization and security-boundary bypass vulnerability in the bigquery-execute-sql tool component of Google mcp-toolbox versions 0.16.1 through 1.4.0 allows an authenticated attacker to bypass allowedDatasets validation checks. The toolbox relies on the BigQuery dry-run API to enforce dataset restrictions, but due to a fail-open logic flaw, it bypasses validation when the API returns an empty array for specialized constructs. This allows the attacker to extract structural DDL schemas for explicitly excluded datasets via INFORMATION_SCHEMA, and access downstream federated row data via EXTERNAL_QUERY connections.

CVSS v3
7.7
EG Score
7.7HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA 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
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (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

July 31, 2026

Last Modified

August 8, 2026

Advisory Details (1)

Auto-updated Jul 31, 2026
Patch available. Sources: github_pr.
github_pr Patch Available

fix(tool/bigquery-execute-sql): prevent dataset restriction bypass

Patch available: googleapis/mcp-toolbox v1.5.0 (PR #3452 merged 2026-06-18)

https://github.com/googleapis/mcp-toolbox/pull/3452

Vendor Advisories for CVE-2026-14538(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 80× 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 212 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-14538?
CVE-2026-14538 is a high vulnerability published on July 31, 2026. An improper authorization and security-boundary bypass vulnerability in the bigquery-execute-sql tool component of Google mcp-toolbox versions 0.16.1 through 1.4.0 allows an authenticated attacker to bypass allowedDatasets validation checks. The toolbox relies on the BigQuery dry-run API to enforce…
When was CVE-2026-14538 disclosed?
CVE-2026-14538 was first published on July 31, 2026, with the most recent update on August 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14538 actively exploited?
CVE-2026-14538 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-14538?
CVE-2026-14538 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-14538?
A fix for CVE-2026-14538 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-14538 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-14538

Explore →

Is Your Infrastructure Affected by CVE-2026-14538?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs