CVE-2026-15015

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH 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 — 4 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: 0%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(high)
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%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
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 34× in last 7d / 34× 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. 2026-07-29 07:37 UTCGHSA enrichment
  2. 2026-07-29 03:58 UTCGHSA enrichment
  3. 2026-07-29 00:19 UTCGHSA enrichment
  4. 2026-07-28 20:41 UTCGHSA enrichment
  5. 2026-07-28 17:02 UTCEG score recompute
  6. 2026-07-28 17:01 UTCGHSA enrichment
  7. 2026-07-28 15:36 UTCEPSS rescore
  8. 2026-07-28 13:23 UTCGHSA enrichment
  9. 2026-07-28 09:44 UTCGHSA enrichment
  10. 2026-07-28 06:06 UTCGHSA enrichment
  11. 2026-07-28 02:29 UTCGHSA enrichment
  12. 2026-07-27 22:51 UTCGHSA enrichment
  13. 2026-07-27 18:45 UTCGHSA enrichment
  14. 2026-07-27 15:07 UTCEG score recompute
  15. 2026-07-27 15:07 UTCGHSA enrichment
  16. 2026-07-27 14:13 UTCEPSS rescore
  17. 2026-07-27 11:13 UTCGHSA enrichment
  18. 2026-07-27 07:36 UTCGHSA enrichment
  19. 2026-07-27 03:59 UTCGHSA enrichment
  20. 2026-07-27 00:21 UTCGHSA enrichment
  21. 2026-07-26 20:42 UTCGHSA enrichment
  22. 2026-07-26 17:04 UTCEG score recompute
  23. 2026-07-26 17:04 UTCGHSA enrichment
  24. 2026-07-26 14:54 UTCEPSS rescore
  25. 2026-07-26 14:54 UTCEPSS rescore
Show 9 more
  1. 2026-07-26 13:26 UTCEG score recompute
  2. 2026-07-26 13:26 UTCGHSA enrichment
  3. 2026-07-26 09:46 UTCGHSA enrichment
  4. 2026-07-26 03:16 UTCEG score recompute
  5. 2026-07-26 03:16 UTCGHSA enrichment
  6. 2026-07-25 14:17 UTCEPSS rescore
  7. 2026-07-24 14:17 UTCEPSS rescore
  8. 2026-07-23 10:15 UTCEG score recompute
  9. 2026-07-23 10:14 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 0% probability of exploitation in the next 30 days, which ranks it in the top 69.3% 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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