EUVD-2026-49072
GHSA-v365-26q9-f844
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from Vendor (WPScan) · only source for this CVE.
CVSS VectorVendor: WPScan
Lifecycle Timeline
4DescriptionCVE.org
Simply Schedule Appointments is vulnerable to unauthenticated Stored Cross-Site Scripting in all versions up to and including 1.6.12.2. The root cause is a sanitization-ordering defect: the rendered notification content is decoded back into live HTML after it has already passed through the Simply Schedule Appointments WordPress plugin before 1.6.12.4's wp_kses_post() filter, so a double-encoded payload survives intake and is reintroduced as an executable element at render time.
AnalysisAI
Stored Cross-Site Scripting in Simply Schedule Appointments up to 1.6.12.2 allows unauthenticated attackers to inject arbitrary web scripts. A double‑encoding fault causes payloads to bypass the plugin’s wp_kses_post() sanitizer and then execute when an administrator views appointment notifications. The vulnerability is fixed in version 1.6.12.4; a public proof‑of‑concept exists but no active exploitation has been confirmed.
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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