CVE-2026-77076

MEDIUMNVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain an information disclosure vulnerability in the GraphQL node. When a GraphQL request fails at the connection level, the node re-throws the underlying HTTP client error unchanged instead of wrapping it in n8n's standard error type. That error contains the live request's headers, including a decrypted credential secret, which the execution engine persists verbatim. Any authenticated user able to read the resulting execution can retrieve the decrypted credential secret from the stored run data.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

August 20, 2026

Last Modified

September 1, 2026

Advisory Details (2)

Auto-updated Aug 20, 2026
Patch available. Sources: github.
generic

n8n before 1.123.69 Credential Leak via GraphQL Node Error | Advisories | VulnCheck

https://www.vulncheck.com/advisories/n8n-before-credential-leak-via-graphql-node-error
github Patch Available

GraphQL Node Raw Error Re-throw Leaks Decrypted Credential Headers into Persisted Execution Data · Advisory · n8n-io/n8n · GitHub

https://github.com/n8n-io/n8n/security/advisories/GHSA-9fqj-7wc5-cwhx

Vendor Advisories for CVE-2026-77076(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 96× 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. 2026-09-19 01:45 UTCEG score recompute
  2. 2026-09-19 01:45 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 00:08 UTCEG score recompute
  5. 2026-09-18 00:08 UTCGHSA enrichment
  6. 2026-09-16 21:46 UTCEG score recompute
  7. 2026-09-16 21:46 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 18:49 UTCEG score recompute
  11. 2026-09-15 18:49 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-14 17:05 UTCEG score recompute
  14. 2026-09-14 17:05 UTCGHSA enrichment
  15. 2026-09-13 15:28 UTCEG score recompute
  16. 2026-09-13 15:28 UTCGHSA enrichment
  17. 2026-09-12 15:02 UTCEPSS rescore
  18. 2026-09-12 13:51 UTCEG score recompute
  19. 2026-09-12 13:51 UTCGHSA enrichment
  20. 2026-09-11 14:53 UTCEPSS rescore
  21. 2026-09-11 12:13 UTCEG score recompute
  22. 2026-09-11 12:13 UTCGHSA enrichment
  23. 2026-09-10 09:53 UTCEG score recompute
  24. 2026-09-10 09:53 UTCGHSA enrichment
  25. 2026-09-10 09:35 UTCEPSS rescore
Show 74 more
  1. 2026-09-09 08:16 UTCEG score recompute
  2. 2026-09-09 08:16 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 06:40 UTCEG score recompute
  5. 2026-09-08 06:40 UTCGHSA enrichment
  6. 2026-09-07 04:56 UTCEG score recompute
  7. 2026-09-07 04:56 UTCGHSA enrichment
  8. 2026-09-06 13:48 UTCEPSS rescore
  9. 2026-09-06 03:20 UTCEG score recompute
  10. 2026-09-06 03:20 UTCGHSA enrichment
  11. 2026-09-05 01:43 UTCEG score recompute
  12. 2026-09-05 01:43 UTCGHSA enrichment
  13. 2026-09-04 05:07 UTCEPSS rescore
  14. 2026-09-04 00:05 UTCGHSA enrichment
  15. 2026-09-02 21:42 UTCEG score recompute
  16. 2026-09-02 21:42 UTCGHSA enrichment
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-01 20:02 UTCEG score recompute▼ 0.60
  19. 2026-09-01 20:02 UTCGHSA enrichment
  20. 2026-09-01 20:02 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-09-01 08:42 UTCEG score recompute
  23. 2026-09-01 08:42 UTCGHSA enrichment
  24. 2026-09-01 04:40 UTCEPSS rescore
  25. 2026-09-01 04:40 UTCEPSS rescore
  26. 2026-08-31 20:25 UTCGHSA enrichment
  27. 2026-08-31 15:04 UTCGHSA enrichment
  28. 2026-08-31 02:44 UTCEG score recompute
  29. 2026-08-31 02:44 UTCGHSA enrichment
  30. 2026-08-30 19:18 UTCEPSS rescore
  31. 2026-08-30 19:17 UTCEPSS rescore
  32. 2026-08-30 14:27 UTCGHSA enrichment
  33. 2026-08-30 02:10 UTCEG score recompute
  34. 2026-08-30 02:10 UTCGHSA enrichment
  35. 2026-08-30 01:22 UTCEPSS rescore
  36. 2026-08-29 13:54 UTCGHSA enrichment
  37. 2026-08-29 01:32 UTCEG score recompute
  38. 2026-08-29 01:32 UTCGHSA enrichment
  39. 2026-08-28 21:42 UTCEPSS rescore
  40. 2026-08-28 09:01 UTCGHSA enrichment
  41. 2026-08-27 20:44 UTCGHSA enrichment
  42. 2026-08-27 08:28 UTCGHSA enrichment
  43. 2026-08-26 20:11 UTCEG score recompute
  44. 2026-08-26 20:11 UTCGHSA enrichment
  45. 2026-08-26 14:47 UTCEPSS rescore
  46. 2026-08-26 07:54 UTCGHSA enrichment
  47. 2026-08-25 19:37 UTCEG score recompute
  48. 2026-08-25 19:37 UTCGHSA enrichment
  49. 2026-08-25 13:49 UTCEPSS rescore
  50. 2026-08-25 07:19 UTCGHSA enrichment
  51. 2026-08-24 19:02 UTCEG score recompute
  52. 2026-08-24 19:01 UTCGHSA enrichment
  53. 2026-08-24 14:18 UTCEPSS rescore
  54. 2026-08-24 06:45 UTCGHSA enrichment
  55. 2026-08-23 18:28 UTCGHSA enrichment
  56. 2026-08-23 06:12 UTCEG score recompute
  57. 2026-08-23 06:12 UTCGHSA enrichment
  58. 2026-08-23 00:19 UTCEPSS rescore
  59. 2026-08-22 17:55 UTCGHSA enrichment
  60. 2026-08-22 05:38 UTCEG score recompute
  61. 2026-08-22 05:38 UTCGHSA enrichment
  62. 2026-08-21 23:49 UTCEPSS rescore
  63. 2026-08-21 17:21 UTCEG score recompute
  64. 2026-08-21 17:21 UTCGHSA enrichment
  65. 2026-08-21 16:51 UTCEG score recompute
  66. 2026-08-21 16:51 UTCGHSA enrichment
  67. 2026-08-21 12:19 UTCEG score recompute
  68. 2026-08-21 12:19 UTCGHSA enrichment
  69. 2026-08-21 11:30 UTCEG score recompute
  70. 2026-08-21 11:30 UTCGHSA enrichment
  71. 2026-08-21 00:36 UTCGHSA enrichment
  72. 2026-08-20 12:20 UTCEG score recompute
  73. 2026-08-20 11:37 UTCEG score recompute
  74. 2026-08-20 11:36 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-77076?
CVE-2026-77076 is a medium vulnerability published on August 20, 2026. n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain an information disclosure vulnerability in the GraphQL node. When a GraphQL request fails at the connection level, the node re-throws the underlying HTTP client error unchanged instead of wrapping it in n8n's standard error type. That error…
When was CVE-2026-77076 disclosed?
CVE-2026-77076 was first published in the National Vulnerability Database on August 20, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77076 actively exploited?
CVE-2026-77076 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 78.5% of all scored CVEs.
What is the CVSS score of CVE-2026-77076?
CVE-2026-77076 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-77076?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77076, 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.

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