CVE-2026-67621

HIGHPre-NVD 7.67.6—
EchelonGraph scoreMEDIUM confidence

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-07. A secondary CVSS source baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.6EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.6Exploit: Elevated riskExposed services: Not assessed

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

Flowise through 3.1.4 contains a missing authorization vulnerability that allows authenticated workspace members to perform unauthorized document store operations by accessing unprotected mutation endpoints. Attackers holding only view-level permissions can send direct HTTP requests to the upsert and refresh document store routes to trigger document ingestion, refresh vector database contents, consume embedding API credits, and modify knowledge bases used by downstream chatflows.

CVSS v3
7.6
EG Score
7.6HIGHmedium confidence
EG Risk
50
EG Risk 50/100CISA 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%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (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

August 6, 2026

Last Modified

September 15, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

The Future of Flowise

https://flowiseai.com/sunset
generic

cve-advisories/2026/Flowise/CVE-2026-67621.md at main · Caycon/cve-advisories · GitHub

https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-67621.md

Vendor Advisories for CVE-2026-67621(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 17× in last 7d / 90× 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 207 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-67621?
CVE-2026-67621 is a high vulnerability published on August 6, 2026. Flowise through 3.1.4 contains a missing authorization vulnerability that allows authenticated workspace members to perform unauthorized document store operations by accessing unprotected mutation endpoints. Attackers holding only view-level permissions can send direct HTTP requests to the upsert…
When was CVE-2026-67621 disclosed?
CVE-2026-67621 was first published on August 6, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67621 actively exploited?
CVE-2026-67621 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-67621?
CVE-2026-67621 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-67621?
No fix for CVE-2026-67621 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-67621 are linked in the Vendor Advisories panel on this page.

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