Vulnerability · Published Jun 26, 2026 · Assigned by Patchstack
CVE-2026-57317WordPress Simply Schedule Appointments plugin <= 1.6.12.2 - Cross Site Scripting (XSS) vulnerability
High 7.1
In plain English
A high-severity cross-site scripting in Simply Schedule Appointments from NSquared. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.2%top 86.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Unauthenticated Cross Site Scripting (XSS) in Simply Schedule Appointments <= 1.6.12.2 versions.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NSquared | Simply Schedule Appointments | n/a – through 1.6.12.2 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L