CVE-2026-59234

MEDIUMPre-NVD 6.96.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 52% 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
6.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.9Exploit: 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 (CWE-639) in CalendarDeleteEventController (app/Http/Controllers/Calendar/CalendarDeleteEventController.php), exposed at GET /calendar/event/delete/{id}, in Prospero Flow CRM before 5.5.3 allows a remote, authenticated attacker to delete arbitrary calendar events belonging to other users by manipulating the {id} path parameter, because the delete handler resolves the record with Calendar::find($id)->delete() and performs no ownership check (no user_id/company_id scoping) before deletion. This results in unauthorized destruction of other users' calendar events across the platform.

CVSS v3
6.9
EG Score
6.9(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity69% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

July 3, 2026

Last Modified

July 6, 2026

Advisory Details (3)

Auto-updated Jul 3, 2026
Patch available. Sources: github_commit, github_release.
generic

CVE-2026-59234 · IDOR in Prospero Flow CRM allows deletion of other users' calendar events | Vulnerabilities published by Secur0

https://secur0.com/en/cna/cve-list/cve-2026-59234-idor-in-prospero-flow-crm-allows-deletion-of-other-users-calendar-events
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 8c26eed4d805 (Roskus/prospero-flow-crm)

Patch available: Roskus/prospero-flow-crm v5.5.3 (contains commit 8c26eed4d805)

https://github.com/Roskus/prospero-flow-crm/commit/8c26eed4d80544c30e55448e12a8e999af6d2b70

Vendor Advisories for CVE-2026-59234(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 16× 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 149 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59234?
CVE-2026-59234 is a medium vulnerability published on July 3, 2026. Authorization Bypass Through User-Controlled Key (CWE-639) in CalendarDeleteEventController (app/Http/Controllers/Calendar/CalendarDeleteEventController.php), exposed at GET /calendar/event/delete/{id}, in Prospero Flow CRM before 5.5.3 allows a remote, authenticated attacker to delete arbitrary…
When was CVE-2026-59234 disclosed?
CVE-2026-59234 was first published in the National Vulnerability Database on July 3, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59234 actively exploited?
CVE-2026-59234 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.9% of all scored CVEs.
What is the CVSS score of CVE-2026-59234?
CVE-2026-59234 has a CVSS v3 base score of 6.9 (NVD).
How do I remediate CVE-2026-59234?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59234, 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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