Threat intelligence

Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.12.2 - Unauthenticated Stored Cross-Site Scripting

CVE-2026-57317 · simply-schedule-appointments

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Simply Schedule Appointments at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.12.2 - Unauthenticated Stored Cross-Site Scripting
Affected software: simply-schedule-appointments(Plugin)
Affected versions: ≤ 1.6.12.2
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-57317
Published: 26 June 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory 12817b77-17d0-418c-a9a1-87d0057da90e). Methodology and redistribution notes

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