Stored XSS via unsanitized background option
Published Oct 2, 2023 · Updated Apr 28, 2026
Stored XSS in YYDevelopment Back To The Top Button 2.1.5 and earlier allows remote authenticated users to inject scripts via admin settings. The plugin's background option accepts an administrator-controlled value and later renders it without adequate input sanitization and output escaping. Administrator-level access is required, and the injected JavaScript executes when another user opens an affected page, enabling actions in that user's browser context.
Summary
What happened
Stored XSS in YYDevelopment Back To The Top Button 2.1.5 and earlier allows remote authenticated users to inject scripts via admin settings. The plugin's background option accepts an administrator-controlled value and later renders it without adequate input sanitization and output escaping. Administrator-level access is required, and the injected JavaScript executes when another user opens an affected page, enabling actions in that user's browser context.
The record
- CVE
- CVE-2023-41733
- Published
- Oct 2, 2023
- Updated
- Apr 28, 2026
- Vendor
- YYDevelopment
- Product
- Back To The Top Button
- Classifications
- CWE-79, CAPEC-592, T1059.007
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Oct 2, 2023CVE publishedPublication date reported by the CVE source.
- Apr 28, 2026Record 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=n/a <=2.1.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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