CVE-2026-39591

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-15. the CNA's CVSS baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:patchstack, epss, ghsa
Trending — 3 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0

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

Subscriber Arbitrary File Upload in WP-BusinessDirectory <= 4.0.0 versions.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity99% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 16, 2026

Advisory Details (1)

Auto-updated Aug 23, 2026
No patch confirmed yet.
generic

Arbitrary File Upload in WordPress WP-BusinessDirectory Plugin - Patchstack

https://patchstack.com/database/wordpress/plugin/wp-businessdirectory/vulnerability/wordpress-wp-businessdirectory-plugin-4-0-0-arbitrary-file-upload-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-39591(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 15× in last 7d / 165× 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 414 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-39591?
CVE-2026-39591 is a critical vulnerability published on June 15, 2026. Subscriber Arbitrary File Upload in WP-BusinessDirectory <= 4.0.0 versions.
When was CVE-2026-39591 disclosed?
CVE-2026-39591 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39591 actively exploited?
CVE-2026-39591 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 61.7% of all scored CVEs.
What is the CVSS score of CVE-2026-39591?
CVE-2026-39591 has a CVSS v4.0 base score of 9.9 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-39591?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39591, 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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