CVE-2026-77072

HIGHNVD 7.67.6—
EchelonGraph scoreMEDIUM confidence

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. NVD baseline CVSS 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

n8n before 1.123.69, 2.33.4, and 2.34.1 contains a stored cross-site scripting vulnerability in the Form node's completion page. The completion page applied its sandboxing Content-Security-Policy only when respondWith was not set to 'redirect', but responseText was always rendered as raw HTML. An authenticated member could set respondWith to 'redirect' via an expression while keeping responseText populated, causing the completion page to serve unsanitized HTML and script from the n8n origin. Any visitor who submitted the resulting public form would have that script execute same-origin with their session.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
34
EG Risk 34/100CISA 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
Severity76% × 45%
Exploitation0% × 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
0.3%
EPSS %ILE
21st
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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 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 Stored XSS via Form Completion Page | Advisories | VulnCheck

https://www.vulncheck.com/advisories/n8n-before-stored-xss-via-form-completion-page
github Patch Available

Form Node Completion Page Sandbox CSP Bypass Leads to Stored XSS · Advisory · n8n-io/n8n · GitHub

https://github.com/n8n-io/n8n/security/advisories/GHSA-rmr5-775f-jvm2

Vendor Advisories for CVE-2026-77072(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 23× in last 7d / 104× 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 176 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-77072?
CVE-2026-77072 is a high vulnerability published on August 20, 2026. n8n before 1.123.69, 2.33.4, and 2.34.1 contains a stored cross-site scripting vulnerability in the Form node's completion page. The completion page applied its sandboxing Content-Security-Policy only when respondWith was not set to 'redirect', but responseText was always rendered as raw HTML. An…
When was CVE-2026-77072 disclosed?
CVE-2026-77072 was first published 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-2026-77072 actively exploited?
CVE-2026-77072 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77072?
CVE-2026-77072 has a CVSS v3 base score of 7.6 (NVD).
How do I remediate CVE-2026-77072?
A fix for CVE-2026-77072 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-77072 are linked in the Vendor Advisories panel on this page.

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