CVE-2026-78365

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 70% 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 — 4 sources updated this week
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

Authorization Bypass Through User-Controlled Key in the supplier API in Roskus Prospero Flow CRM 4.0.0 through 5.3.1 allows any authenticated user to read and modify another company's supplier record, and to reassign it to their own company, via a PUT request to /api/supplier/{id} setting company_id in the body.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 24, 2026

Advisory Details (3)

Auto-updated Aug 25, 2026
Patch available. Sources: github_release, github_commit.
generic

CVE-2026-78365 · IDOR and missing authorization in Prospero Flow CRM supplier API allows cross-tenant read and modification | Vulnerabilities published by Secur0

https://secur0.com/en/cna/cve-list/cve-2026-78365-idor-supplier-api-cross-tenant-update
github_release Patch Available

v5.5.3 - Big security upgrade

Patch available: Roskus/prospero-flow-crm v5.5.3

https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3
github_commit Patch Available

commit 4a52477e6ed6 (Roskus/prospero-flow-crm)

Patch available: Roskus/prospero-flow-crm v5.5.3 (contains commit 4a52477e6ed6)

https://github.com/Roskus/prospero-flow-crm/commit/4a52477e6ed66afa436814c80e7bcd68670dd596

Vendor Advisories for CVE-2026-78365(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 31× in last 7d / 31× 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. 2026-08-28 08:04 UTCGHSA enrichment
  2. 2026-08-28 03:51 UTCGHSA enrichment
  3. 2026-08-27 23:36 UTCGHSA enrichment
  4. 2026-08-27 19:20 UTCGHSA enrichment
  5. 2026-08-27 15:07 UTCEG score recompute
  6. 2026-08-27 15:07 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-27 10:53 UTCGHSA enrichment
  9. 2026-08-27 06:41 UTCGHSA enrichment
  10. 2026-08-27 02:16 UTCGHSA enrichment
  11. 2026-08-26 22:04 UTCGHSA enrichment
  12. 2026-08-26 17:48 UTCEG score recompute
  13. 2026-08-26 17:48 UTCGHSA enrichment
  14. 2026-08-26 14:47 UTCEPSS rescore
  15. 2026-08-26 12:50 UTCGHSA enrichment
  16. 2026-08-26 08:37 UTCGHSA enrichment
  17. 2026-08-26 04:23 UTCGHSA enrichment
  18. 2026-08-26 00:11 UTCGHSA enrichment
  19. 2026-08-25 19:56 UTCGHSA enrichment
  20. 2026-08-25 15:43 UTCEG score recompute
  21. 2026-08-25 15:43 UTCGHSA enrichment
  22. 2026-08-25 13:49 UTCEPSS rescore
  23. 2026-08-25 11:31 UTCGHSA enrichment
  24. 2026-08-25 07:18 UTCGHSA enrichment
  25. 2026-08-25 03:04 UTCGHSA enrichment
Show 6 more
  1. 2026-08-24 22:50 UTCGHSA enrichment
  2. 2026-08-24 18:37 UTCGHSA enrichment
  3. 2026-08-24 14:24 UTCEG score recompute
  4. 2026-08-24 13:22 UTCEG score recompute
  5. 2026-08-24 12:58 UTCEG score recompute
  6. 2026-08-24 12:57 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-78365?
CVE-2026-78365 is a critical vulnerability published on August 24, 2026. Authorization Bypass Through User-Controlled Key in the supplier API in Roskus Prospero Flow CRM 4.0.0 through 5.3.1 allows any authenticated user to read and modify another company's supplier record, and to reassign it to their own company, via a PUT request to /api/supplier/{id} setting…
When was CVE-2026-78365 disclosed?
CVE-2026-78365 was first published in the National Vulnerability Database on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78365 actively exploited?
CVE-2026-78365 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 69.8% of all scored CVEs.
What is the CVSS score of CVE-2026-78365?
CVE-2026-78365 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-78365?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78365, 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

Explore the affected products and dependency analysis for CVE-2026-78365

Explore →

Is Your Infrastructure Affected by CVE-2026-78365?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs