Stored XSS via CSRF-forged settings update
Published May 8, 2023 · Updated Apr 23, 2025
Stored XSS in Sloth Logo Customizer 2.0.2 and earlier allows remote attackers to inject JavaScript through a forged settings request. The setting() function accepts the imageAttachmentId setting without nonce validation, sanitization, or output escaping, so a crafted value persists and executes in an administrator's browser. Exploitation requires a logged-in administrator to open an attacker-controlled page, and the script runs with that administrator's WordPress session privileges.
Summary
What happened
Stored XSS in Sloth Logo Customizer 2.0.2 and earlier allows remote attackers to inject JavaScript through a forged settings request. The setting() function accepts the imageAttachmentId setting without nonce validation, sanitization, or output escaping, so a crafted value persists and executes in an administrator's browser. Exploitation requires a logged-in administrator to open an attacker-controlled page, and the script runs with that administrator's WordPress session privileges.
The record
- CVE
- CVE-2023-0603
- Published
- May 8, 2023
- Updated
- Apr 23, 2025
- Vendor
- ammar.shahraki
- Product
- Sloth Logo Customizer
- Classifications
- CWE-352, CWE-79, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 8, 2023CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record 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 <=2.0.2
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.
Weakness, pattern, technique
Public exploit references
- WPScan CSRF proof of conceptproof of concept · validated
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Technologies
Your stack
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Your stack
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