CVE-2026-59239

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: 0.4%, top 69% 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.

Stored Cross-site Scripting (CWE-79) in the email module in Roskus Prospero Flow CRM before 5.4.4 allows a remote, authenticated low-privileged user to execute arbitrary JavaScript in another user's browser, including administrators, leading to session compromise and account takeover, via a payload stored in an email body that is persisted without sanitization and rendered unescaped with {!! $email->body !!} when the recipient opens the message.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: 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%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

July 27, 2026

Last Modified

July 27, 2026

Advisory Details (3)

Auto-updated Jul 27, 2026
Patch available. Sources: github_commit.
generic

CVE-2026-59239 · Stored XSS in Prospero Flow CRM email body allows administrator account takeover | Vulnerabilities published by Secur0

https://secur0.com/en/cna/cve-list/cve-2026-59239-stored-xss-in-prospero-flow-crm-email-body-allows-administrator-account-takeover
generic

Releases · Roskus/prospero-flow-crm · GitHub

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

commit 32efcd5c395e (Roskus/prospero-flow-crm)

Patch available: Roskus/prospero-flow-crm v5.5.3 (contains commit 32efcd5c395e)

https://github.com/Roskus/prospero-flow-crm/commit/32efcd5c395ee55119fb9aea502a9d06e4c5adb8

Vendor Advisories for CVE-2026-59239(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 22× in last 7d / 116× 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 138 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59239?
CVE-2026-59239 is a high vulnerability published on July 27, 2026. Stored Cross-site Scripting (CWE-79) in the email module in Roskus Prospero Flow CRM before 5.4.4 allows a remote, authenticated low-privileged user to execute arbitrary JavaScript in another user's browser, including administrators, leading to session compromise and account takeover, via a payload…
When was CVE-2026-59239 disclosed?
CVE-2026-59239 was first published in the National Vulnerability Database on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59239 actively exploited?
CVE-2026-59239 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 68.8% of all scored CVEs.
What is the CVSS score of CVE-2026-59239?
CVE-2026-59239 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-59239?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59239, 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.

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