Unauthenticated stored XSS via unescaped registrant name
Published Apr 6, 2023 · Updated Apr 28, 2026
Stored XSS in Fullworks Quick Event Manager 9.7.4 and earlier allows remote attackers to inject scripts through event registration. The plugin stores the yourname registration parameter without adequate sanitization and later renders it without output escaping. No authentication is required to plant the payload, but execution requires a user to open an affected event page, where the script runs in that site's browser context.
Summary
What happened
Stored XSS in Fullworks Quick Event Manager 9.7.4 and earlier allows remote attackers to inject scripts through event registration. The plugin stores the yourname registration parameter without adequate sanitization and later renders it without output escaping. No authentication is required to plant the payload, but execution requires a user to open an affected event page, where the script runs in that site's browser context.
The record
- CVE
- CVE-2023-23979
- Published
- Apr 6, 2023
- Updated
- Apr 28, 2026
- Vendor
- Fullworks Digital Ltd.
- Product
- Quick Event Manager
- Classifications
- CWE-79, CAPEC-592, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 6, 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 <=9.7.4 changes=[{"at":"9.7.5","status":"unaffected"}]
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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