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MountDev AI MCP Connector CVE-2026-85306

| EUVDEUVD-2026-70556 MEDIUM
Missing Authorization (CWE-862)
2026-09-03 Patchstack GHSA-vfr3-w6gw-h5gr
WordPress Wordpress Plugin Mountdev Ai Mcp Connector For Wordpress
6.5
CVSS 3.1 · Vendor: Patchstack
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Severity by source

Vendor (Patchstack) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
vuln.today AI
6.5 MEDIUM

PR:L required (valid WordPress login); missing capability check yields I:H with no confidentiality or availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

3
Metadata Corrected
Sep 03, 2026 - 17:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 03, 2026 - 17:22 vuln.today
CVE Published
Sep 03, 2026 - 16:53 cve.org
MEDIUM 6.5

DescriptionCVE.org

Missing Authorization vulnerability in Cascadia Web Services MountDev AI MCP Connector for WordPress allows Exploiting Incorrectly Configured Access Control Security Levels.

This issue affects MountDev AI MCP Connector for WordPress: from n/a through 1.6.5.

AnalysisAI

Missing Authorization in MountDev AI MCP Connector for WordPress (≤1.6.5) by Cascadia Web Services allows any authenticated low-privileged user to invoke plugin endpoints without proper capability checks, producing high integrity impact with no confidentiality or availability exposure. The root cause is CWE-862 (Missing Authorization), meaning the plugin registers REST or AJAX handlers that omit WordPress capability checks, permitting subscriber-level users to perform actions reserved for administrators. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid WordPress user account at minimum subscriber level (PR:L); unauthenticated visitors cannot exploit this vulnerability. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 6.5 Medium score reflects a meaningful but bounded risk: network-accessible (AV:N), low complexity (AC:L), but gated behind a valid login (PR:L), which is a non-trivial prerequisite for many hardened deployments. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Monitor the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/mountdev-ai-mcp-connector/vulnerability/wordpress-mountdev-ai-mcp-connector-for-wordpress-plugin-1-6-5-broken-access-control-vulnerability and the WordPress plugin repository for a patched release beyond 1.6.5; apply as soon as one is available. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-85306 vulnerability details – vuln.today
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