CVE-2026-59558 in Booking Calendar Plugin

Summary

by MITRE • 07/27/2026

Unauthenticated Cross Site Scripting (XSS) in Booking Calendar <= 11.4.2 versions.

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• Responsible: Patchstack
• Reservation: 07/05/2026
• Disclosure: 07/27/2026
• Moderation: accepted
• Entry: VDB-383454
• CPE: ready
• CWE: CWE-79 (confirmed)
• CVSS: 4.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: low
• Sector: Hostingprovider

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-59558
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59558
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-59558/