CVE-2026-56276

MEDIUMPre-NVD 6.06.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 71% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
6.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.0Exploit: None knownExposed: 0

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

Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to directly modify the credential field without validation. Attackers can bypass password change verification and session invalidation by supplying a crafted password hash, establishing persistent account access after temporary session compromise.

CVSS v3
6.0
EG Score
6.0(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity60% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

June 20, 2026

Last Modified

June 22, 2026

Advisory Details (2)

Auto-updated Jun 20, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override | Advisories | VulnCheck

https://www.vulncheck.com/advisories/flowise-mass-assignment-in-put-api-v1-user-allows-password-hash-override
github Patch Available🟡 PoC Available

Mass Assignment in PUT /api/v1/user Allows Authenticated Users to Override Password Hash and Bypass Password Change Verification · Advisory · FlowiseAI/Flowise · GitHub

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-59fh-9f3p-7m39

Vendor Advisories for CVE-2026-56276(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
flowise—3.1.2—

Weakness Classification(1)

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 159 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-56276?
CVE-2026-56276 is a medium vulnerability published on June 20, 2026. Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to directly modify the credential field without validation. Attackers can bypass password change verification and session invalidation by supplying a crafted password hash,…
When was CVE-2026-56276 disclosed?
CVE-2026-56276 was first published in the National Vulnerability Database on June 20, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56276 actively exploited?
CVE-2026-56276 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 70.7% of all scored CVEs.
What is the CVSS score of CVE-2026-56276?
CVE-2026-56276 has a CVSS v3 base score of 6.0 (NVD).
How do I remediate CVE-2026-56276?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56276, 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.

Dependency Blast Radius

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