Stored XSS via unsanitized appointment instructions
Published Nov 5, 2024 · Updated Nov 5, 2024
Stored XSS in Simply Schedule Appointments before 1.6.7.55 allows remote authenticated users to execute script in an administrator's browser. The Appointment Type instructions setting stores input without adequate sanitization or output escaping and renders it in the email-notification editor. Administrator access is required to store the payload, and another administrator must open the affected editor, exposing data and actions available to that browser session.
Summary
What happened
Stored XSS in Simply Schedule Appointments before 1.6.7.55 allows remote authenticated users to execute script in an administrator's browser. The Appointment Type instructions setting stores input without adequate sanitization or output escaping and renders it in the email-notification editor. Administrator access is required to store the payload, and another administrator must open the affected editor, exposing data and actions available to that browser session.
The record
- CVE
- CVE-2024-7876
- Published
- Nov 5, 2024
- Updated
- Nov 5, 2024
- Vendor
- NSquared
- Product
- Simply Schedule Appointments
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Nov 5, 2024CVE publishedPublication date reported by the CVE source.
- Nov 5, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <1.6.7.55
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- WPScan Appointment Type instructions proof of conceptproof of concept · validated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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