CVE-2026-19433

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 83% 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
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: 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 contact management component in Roskus Prospero Flow CRM before 5.4.8 allows authenticated users of any company to blindly overwrite the contact data of another company and to download that contact's personal data as a vCard via the contact's numeric identifier, because the save and export operations retrieve the record without constraining the query to the authenticated user's company.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity86% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 10, 2026

Advisory Details (3)

Auto-updated Aug 10, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github_commit.
generic🟡 PoC Available

CVE-2026-19433 · Authorization Bypass Through User-Controlled Key in Prospero Flow CRM allows writing and reading other companies' contacts | Vulnerabilities published by Secur0

https://secur0.com/en/cna/cve-list/cve-2026-19433-idor-in-prospero-flow-crm-contact-save-and-vcard-export
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 f16b4af2027b (Roskus/prospero-flow-crm)

Patch available: Roskus/prospero-flow-crm v5.5.3 (contains commit f16b4af2027b)

https://github.com/Roskus/prospero-flow-crm/commit/f16b4af2027b17bef7c604c92dbd86cf38082398

Vendor Advisories for CVE-2026-19433(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 26× in last 7d / 45× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 20:23 UTCGHSA enrichment
  3. 2026-08-20 07:43 UTCGHSA enrichment
  4. 2026-08-19 19:03 UTCEG score recompute
  5. 2026-08-19 19:03 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 06:23 UTCGHSA enrichment
  8. 2026-08-18 17:24 UTCEG score recompute
  9. 2026-08-18 17:24 UTCGHSA enrichment
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 03:51 UTCGHSA enrichment
  12. 2026-08-17 15:10 UTCEG score recompute
  13. 2026-08-17 15:10 UTCGHSA enrichment
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-17 02:30 UTCEG score recompute
  16. 2026-08-17 02:30 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 13:50 UTCEG score recompute
  19. 2026-08-16 13:50 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-16 01:10 UTCGHSA enrichment
  22. 2026-08-15 12:30 UTCEG score recompute
  23. 2026-08-15 12:30 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 23:50 UTCGHSA enrichment
Show 20 more
  1. 2026-08-14 11:10 UTCGHSA enrichment
  2. 2026-08-13 22:30 UTCEG score recompute
  3. 2026-08-13 22:30 UTCGHSA enrichment
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 09:50 UTCGHSA enrichment
  6. 2026-08-12 21:10 UTCEG score recompute
  7. 2026-08-12 21:10 UTCGHSA enrichment
  8. 2026-08-12 13:50 UTCEPSS rescore
  9. 2026-08-12 08:23 UTCGHSA enrichment
  10. 2026-08-11 19:43 UTCEG score recompute
  11. 2026-08-11 19:43 UTCGHSA enrichment
  12. 2026-08-11 13:42 UTCEPSS rescore
  13. 2026-08-11 07:04 UTCGHSA enrichment
  14. 2026-08-10 18:24 UTCEG score recompute
  15. 2026-08-10 18:24 UTCGHSA enrichment
  16. 2026-08-10 18:15 UTCEG score recompute
  17. 2026-08-10 18:15 UTCGHSA enrichment
  18. 2026-08-10 15:29 UTCEG score recompute
  19. 2026-08-10 14:35 UTCEG score recompute
  20. 2026-08-10 14:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19433?
CVE-2026-19433 is a high vulnerability published on August 10, 2026. Authorization Bypass Through User-Controlled Key in the contact management component in Roskus Prospero Flow CRM before 5.4.8 allows authenticated users of any company to blindly overwrite the contact data of another company and to download that contact's personal data as a vCard via the contact's…
When was CVE-2026-19433 disclosed?
CVE-2026-19433 was first published in the National Vulnerability Database on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19433 actively exploited?
CVE-2026-19433 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 83.0% of all scored CVEs.
What is the CVSS score of CVE-2026-19433?
CVE-2026-19433 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-19433?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19433, 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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