EUVD-2026-76801
GHSA-7hp7-3c46-m2c9
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network REST endpoint requires subscriber credentials (PR:L) and admin page view (UI:R); scope changed (S:C) because XSS in admin browser enables full WordPress site compromise.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
5DescriptionCVE.org
The YayPricing WordPress plugin before 3.5.7 does not perform an authorization check on a REST route that saves its pricing rules, allowing users with the subscriber role and above to store JavaScript that executes in the browser of an administrator who opens the YayPricing WordPress plugin before 3.5.7's settings page.
AnalysisAI
Stored cross-site scripting in the YayPricing WordPress plugin before 3.5.7 lets any authenticated subscriber-role user inject arbitrary JavaScript into the plugin's pricing rules via an unprotected REST API endpoint that lacks authorization checks. The payload persists server-side and executes in the browser of any WordPress administrator who subsequently opens the YayPricing settings page, enabling session hijacking or full administrative account takeover. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two conditions: first, the attacker must hold a subscriber-level (or higher) WordPress account on the target site - open user registration or a known valid credential satisfies this. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.0 score (AV:N/AC:L/PR:L/UI:R/S:U) accurately reflects the core requirements: a network-accessible REST endpoint, low-privilege subscriber credentials, and an administrator who must load the settings page. … 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 | Update YayPricing to version 3.5.7 or later, which applies the REST route authorization fix per the WPScan advisory at https://wpscan.com/vulnerability/19bc425d-2aa3-4b2b-bc66-ac5ea96502e0/. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WordPress installations to identify those using YayPricing plugin and document their current versions. …
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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