CVE-2026-70636

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-07. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.5Exploit: 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 an authentication bypass vulnerability that allows unauthenticated attackers to access the OAuth2 credential refresh endpoint by exploiting prefix-based whitelist matching in the authentication middleware defined in packages/server/src/utils/constants.ts. Attackers can send a POST request to the oauth2-credential refresh route with a trailing credential identifier to bypass all authentication and authorization checks, triggering unauthorized OAuth token rotation against credentials belonging to any workspace and potentially disrupting dependent OAuth integrations. This is a bypass of CVE-2026-41273.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100CISA 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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend 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 at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.7%
EPSS %ILE
49th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend 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 at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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-2026-70636.md at main · Caycon/cve-advisories · GitHub

https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-70636.md

Vendor Advisories for CVE-2026-70636(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 / 85× 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 11:14 UTCGHSA enrichment
  13. 2026-09-30 22:58 UTCEG score recompute
  14. 2026-09-30 22:58 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 05:27 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 02:03 UTCEG score recompute
  2. 2026-09-24 02:03 UTCGHSA enrichment
  3. 2026-09-23 17:54 UTCEPSS rescore
  4. 2026-09-23 13:48 UTCGHSA enrichment
  5. 2026-09-23 01:21 UTCEG score recompute
  6. 2026-09-23 01:21 UTCGHSA enrichment
  7. 2026-09-22 13:07 UTCGHSA enrichment
  8. 2026-09-22 00:52 UTCEG score recompute
  9. 2026-09-22 00:51 UTCGHSA enrichment
  10. 2026-09-21 21:09 UTCEPSS rescore
  11. 2026-09-21 12:24 UTCGHSA enrichment
  12. 2026-09-20 10:56 UTCGHSA enrichment
  13. 2026-09-19 20:15 UTCEG score recompute
  14. 2026-09-19 20:15 UTCGHSA enrichment
  15. 2026-09-19 07:23 UTCEG score recompute
  16. 2026-09-19 07:23 UTCGHSA enrichment
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-18 17:35 UTCGHSA enrichment
  19. 2026-09-18 03:26 UTCEG score recompute
  20. 2026-09-18 03:26 UTCGHSA enrichment
  21. 2026-09-17 15:12 UTCGHSA enrichment
  22. 2026-09-17 00:55 UTCEG score recompute
  23. 2026-09-17 00:55 UTCGHSA enrichment
  24. 2026-09-16 14:08 UTCEPSS rescore
  25. 2026-09-16 05:15 UTCEPSS rescore
  26. 2026-09-16 05:09 UTCGHSA enrichment
  27. 2026-09-15 16:12 UTCGHSA enrichment
  28. 2026-09-15 14:20 UTCEG score recompute
  29. 2026-09-15 14:20 UTCGHSA enrichment
  30. 2026-09-15 03:12 UTCEPSS rescore
  31. 2026-09-15 01:03 UTCGHSA enrichment
  32. 2026-09-14 09:34 UTCGHSA enrichment
  33. 2026-09-13 21:20 UTCEG score recompute
  34. 2026-09-13 21:20 UTCGHSA enrichment
  35. 2026-09-13 09:05 UTCGHSA enrichment
  36. 2026-09-12 20:51 UTCEG score recompute
  37. 2026-09-12 20:51 UTCGHSA enrichment
  38. 2026-09-12 15:02 UTCEPSS rescore
  39. 2026-09-12 08:37 UTCGHSA enrichment
  40. 2026-09-11 20:22 UTCEG score recompute
  41. 2026-09-11 20:22 UTCGHSA enrichment
  42. 2026-09-11 14:53 UTCEPSS rescore
  43. 2026-09-11 07:31 UTCGHSA enrichment
  44. 2026-09-10 19:17 UTCEG score recompute
  45. 2026-09-10 19:17 UTCGHSA enrichment
  46. 2026-09-10 09:35 UTCEPSS rescore
  47. 2026-09-10 07:02 UTCGHSA enrichment
  48. 2026-09-09 18:47 UTCGHSA enrichment
  49. 2026-09-09 06:04 UTCEG score recompute
  50. 2026-09-09 06:04 UTCGHSA enrichment
  51. 2026-09-08 22:01 UTCEPSS rescore
  52. 2026-09-08 07:30 UTCGHSA enrichment
  53. 2026-09-07 17:49 UTCEG score recompute
  54. 2026-09-07 17:49 UTCGHSA enrichment
  55. 2026-09-07 16:01 UTCEPSS rescore
  56. 2026-09-06 16:44 UTCEG score recompute
  57. 2026-09-06 16:44 UTCGHSA enrichment
  58. 2026-09-06 13:47 UTCEPSS rescore
  59. 2026-09-06 04:29 UTCEG score recompute
  60. 2026-09-06 04:29 UTCGHSA enrichment
  61. 2026-09-05 16:15 UTCEG score recompute
  62. 2026-09-05 16:15 UTCGHSA enrichment
  63. 2026-09-05 15:31 UTCEPSS rescore
  64. 2026-09-05 03:22 UTCEG score recompute
  65. 2026-09-05 03:22 UTCGHSA enrichment
  66. 2026-09-04 09:08 UTCEG score recompute
  67. 2026-09-04 09:08 UTCGHSA enrichment
  68. 2026-09-04 05:07 UTCEPSS rescore
  69. 2026-09-03 19:10 UTCGHSA enrichment
  70. 2026-09-03 06:09 UTCEG score recompute
  71. 2026-09-03 06:09 UTCGHSA enrichment
  72. 2026-09-02 14:12 UTCEPSS rescore
  73. 2026-09-02 06:51 UTCGHSA enrichment
  74. 2026-09-01 17:40 UTCEG score recompute
  75. 2026-09-01 17:40 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-70636?
CVE-2026-70636 is a high vulnerability published on August 6, 2026. Flowise through 3.1.4 contains an authentication bypass vulnerability that allows unauthenticated attackers to access the OAuth2 credential refresh endpoint by exploiting prefix-based whitelist matching in the authentication middleware defined in packages/server/src/utils/constants.ts. Attackers…
When was CVE-2026-70636 disclosed?
CVE-2026-70636 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-2026-70636 actively exploited?
CVE-2026-70636 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (49th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70636?
CVE-2026-70636 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70636?
No fix for CVE-2026-70636 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-2026-70636 are linked in the Vendor Advisories panel on this page.

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