CVE-2026-15451

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-12. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The MemberPress Corporate Accounts plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 1.5.39. This is due to a mass assignment vulnerability in the 'add_sub_account_user' function that passes the raw 'userdata' array to 'wp_insert_user' without filtering dangerous keys like role or ID. This makes it possible for authenticated attackers, with subscriber-level access and above who hold a corporate account, to create new administrator accounts or hijack existing administrator accounts by overwriting their email addresses. The vulnerability was partially patched in version 1.5.39.

CVSS v3
8.8
EG Score
8.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
13th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 12, 2026

Last Modified

September 14, 2026

Advisory Details (1)

Auto-updated Sep 12, 2026
Fix named in the CVE record.
generic

Corporate Accounts Add-On | MemberPress

https://memberpress.com/addons/corporate-accounts/

Vendor Advisories for CVE-2026-15451(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 29× 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.

  1. 2026-10-04 11:44 UTCGHSA enrichment
  2. 2026-10-03 23:59 UTCEG score recompute
  3. 2026-10-03 23:59 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 12:13 UTCGHSA enrichment
  6. 2026-10-03 00:28 UTCEG score recompute
  7. 2026-10-03 00:28 UTCGHSA enrichment
  8. 2026-10-02 12:43 UTCGHSA enrichment
  9. 2026-10-02 00:58 UTCEG score recompute
  10. 2026-10-02 00:58 UTCGHSA enrichment
  11. 2026-10-01 19:49 UTCEPSS rescore
  12. 2026-10-01 13:08 UTCGHSA enrichment
  13. 2026-10-01 01:23 UTCEG score recompute
  14. 2026-10-01 01:23 UTCGHSA enrichment
  15. 2026-09-30 15:02 UTCEPSS rescore
  16. 2026-09-30 13:39 UTCGHSA enrichment
  17. 2026-09-30 01:49 UTCEG score recompute
  18. 2026-09-30 01:49 UTCGHSA enrichment
  19. 2026-09-29 15:20 UTCEPSS rescore
  20. 2026-09-29 14:04 UTCGHSA enrichment
  21. 2026-09-29 02:19 UTCEG score recompute
  22. 2026-09-29 02:19 UTCGHSA enrichment
  23. 2026-09-28 14:32 UTCEG score recompute
  24. 2026-09-28 14:32 UTCGHSA enrichment
  25. 2026-09-28 13:51 UTCEPSS rescore
Show 60 more
  1. 2026-09-28 02:46 UTCGHSA enrichment
  2. 2026-09-27 15:02 UTCEG score recompute
  3. 2026-09-27 15:02 UTCGHSA enrichment
  4. 2026-09-27 13:47 UTCEPSS rescore
  5. 2026-09-27 03:10 UTCEG score recompute
  6. 2026-09-27 03:09 UTCGHSA enrichment
  7. 2026-09-26 15:58 UTCEPSS rescore
  8. 2026-09-26 15:21 UTCGHSA enrichment
  9. 2026-09-26 03:36 UTCEG score recompute
  10. 2026-09-26 03:36 UTCGHSA enrichment
  11. 2026-09-25 15:42 UTCGHSA enrichment
  12. 2026-09-25 03:57 UTCGHSA enrichment
  13. 2026-09-24 16:12 UTCEG score recompute
  14. 2026-09-24 16:12 UTCGHSA enrichment
  15. 2026-09-24 04:27 UTCGHSA enrichment
  16. 2026-09-23 16:41 UTCEG score recompute
  17. 2026-09-23 16:41 UTCGHSA enrichment
  18. 2026-09-23 04:56 UTCGHSA enrichment
  19. 2026-09-22 17:10 UTCEG score recompute
  20. 2026-09-22 17:10 UTCGHSA enrichment
  21. 2026-09-22 05:24 UTCEG score recompute
  22. 2026-09-22 05:24 UTCGHSA enrichment
  23. 2026-09-21 17:39 UTCGHSA enrichment
  24. 2026-09-21 05:54 UTCEG score recompute
  25. 2026-09-21 05:54 UTCGHSA enrichment
  26. 2026-09-20 18:09 UTCGHSA enrichment
  27. 2026-09-20 06:23 UTCGHSA enrichment
  28. 2026-09-19 18:35 UTCEG score recompute
  29. 2026-09-19 18:35 UTCGHSA enrichment
  30. 2026-09-19 06:50 UTCEG score recompute
  31. 2026-09-19 06:50 UTCGHSA enrichment
  32. 2026-09-18 19:27 UTCEPSS rescore
  33. 2026-09-18 19:05 UTCGHSA enrichment
  34. 2026-09-18 07:20 UTCGHSA enrichment
  35. 2026-09-17 19:35 UTCEG score recompute
  36. 2026-09-17 19:35 UTCGHSA enrichment
  37. 2026-09-17 05:46 UTCGHSA enrichment
  38. 2026-09-16 17:58 UTCEG score recompute
  39. 2026-09-16 17:58 UTCGHSA enrichment
  40. 2026-09-16 14:07 UTCEPSS rescore
  41. 2026-09-16 05:14 UTCEPSS rescore
  42. 2026-09-16 04:49 UTCGHSA enrichment
  43. 2026-09-15 17:03 UTCGHSA enrichment
  44. 2026-09-15 05:17 UTCEG score recompute
  45. 2026-09-15 05:17 UTCGHSA enrichment
  46. 2026-09-14 17:28 UTCEG score recompute
  47. 2026-09-14 17:28 UTCGHSA enrichment
  48. 2026-09-14 16:20 UTCEG score recompute
  49. 2026-09-14 16:20 UTCGHSA enrichment
  50. 2026-09-14 13:58 UTCGHSA enrichment
  51. 2026-09-14 12:37 UTCGHSA enrichment
  52. 2026-09-14 00:40 UTCEG score recompute
  53. 2026-09-14 00:40 UTCGHSA enrichment
  54. 2026-09-13 16:46 UTCEPSS rescore
  55. 2026-09-13 12:55 UTCGHSA enrichment
  56. 2026-09-13 01:10 UTCEG score recompute
  57. 2026-09-13 01:10 UTCGHSA enrichment
  58. 2026-09-12 13:25 UTCEG score recompute
  59. 2026-09-12 12:39 UTCEG score recompute
  60. 2026-09-12 12:38 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-15451?
CVE-2026-15451 is a high vulnerability published on September 12, 2026. The MemberPress Corporate Accounts plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 1.5.39. This is due to a mass assignment vulnerability in the 'addsubaccountuser' function that passes the raw 'userdata' array to 'wpinsert_user' without filtering…
When was CVE-2026-15451 disclosed?
CVE-2026-15451 was first published on September 12, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15451 actively exploited?
CVE-2026-15451 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15451?
CVE-2026-15451 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15451?
A fix for CVE-2026-15451 is available — its CVE record says: "The vulnerability was partially patched in version 1.5.39." The vendor advisories EchelonGraph has for CVE-2026-15451 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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