Stored XSS via unescaped check-in place ID
Published Apr 18, 2026 · Updated Apr 18, 2026
Stored XSS in the Youzify wall in versions 1.3.6 and earlier allows remote authenticated users to inject scripts through checkin_place_id. The wall form stores that parameter without sufficient sanitization, and the wall renderer later outputs it without context-appropriate escaping. Subscriber-level access is sufficient; the script runs in another user's browser when an affected wall page is opened, allowing data access or actions within that user's session.
Summary
What happened
Stored XSS in the Youzify wall in versions 1.3.6 and earlier allows remote authenticated users to inject scripts through checkin_place_id. The wall form stores that parameter without sufficient sanitization, and the wall renderer later outputs it without context-appropriate escaping. Subscriber-level access is sufficient; the script runs in another user's browser when an affected wall page is opened, allowing data access or actions within that user's session.
The record
- CVE
- CVE-2026-1559
- Published
- Apr 18, 2026
- Updated
- Apr 18, 2026
- Vendor
- KaineLabs
- Product
- Youzify
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 18, 2026CVE publishedPublication date reported by the CVE source.
- Apr 18, 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?
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- Affected versionversion=0 <=1.3.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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