CVE-2026-15015

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-23. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

The MountDev AI MCP Connector for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.6.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to obtain an administrator-bound OAuth Bearer token via a self-registered client, granting full administrator-equivalent access to the plugin's MCP tool surface and all exposed WordPress content, users, and options. This is exploitable by combining the publicly accessible Dynamic Client Registration endpoint, which allows unauthenticated callers to register arbitrary OAuth clients with an attacker-controlled redirect_uri, with the unprotected authorization endpoint to complete the full OAuth flow without any administrator interaction.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
52%
KEV
Not listed

Published

July 23, 2026

Last Modified

July 23, 2026

References (6)

Vendor Advisories for CVE-2026-15015(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 31× in last 7d / 176× 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 341 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-15015?
CVE-2026-15015 is a critical vulnerability published on July 23, 2026. The MountDev AI MCP Connector for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.6.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers…
When was CVE-2026-15015 disclosed?
CVE-2026-15015 was first published in the National Vulnerability Database on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15015 actively exploited?
CVE-2026-15015 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 48.4% of all scored CVEs.
What is the CVSS score of CVE-2026-15015?
CVE-2026-15015 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-15015?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15015, 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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