EUVD-2026-37463Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated remote privilege escalation in a WordPress plugin yields admin-equivalent control, giving full C/I/A impact at AV:N/AC:L/PR:N/UI:N.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated Privilege Escalation in Support Board < 3.8.9 versions.
AnalysisAI
Unauthenticated privilege escalation in the Support Board WordPress plugin (versions prior to 3.8.9) allows remote attackers with no credentials to elevate privileges on affected WordPress sites. The flaw was reported by Patchstack and is tied to CWE-266 (Incorrect Privilege Assignment), with a critical CVSS 3.1 base score of 9.8 reflecting network-reachable, low-complexity exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation against default configurations of the Support Board WordPress plugin at any version below 3.8.9 (CVSS AV:N/AC:L/PR:N/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is high and should be treated as priority remediation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker scans the public internet for WordPress sites running Support Board < 3.8.9 (typically fingerprinted via plugin assets or readme.txt), then sends a crafted unauthenticated HTTP request to the vulnerable endpoint to either register a new account with elevated capabilities or promote an existing low-privilege account to administrator. With administrator role obtained, the attacker uploads a malicious plugin or theme containing PHP, achieving arbitrary code execution and persistent site control. … |
| Remediation | Vendor-released patch: Support Board 3.8.9 - upgrade the plugin to version 3.8.9 or later via the WordPress plugin manager or by replacing the plugin files, then verify the installed version in Plugins > Installed Plugins. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit all WordPress installations to identify those running the Support Board plugin and determine current versions in use. …
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Same weakness CWE-266 – Incorrect Privilege Assignment
View allSame technique Privilege Escalation
View allShare
External POC / Exploit Code
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