CVE-2026-89294 Simply Schedule Appointments - Local File Inclusion

Simply Schedule Appointments WordPress plugin <= 1.6.12.27 contains a local file inclusion caused by unsanitized 'ssa_locale' parameter, letting unauthenticated attackers execute arbitrary PHP code, exploit requires no authentication.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.65% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Local File Inclusion
Impact
Remote Code Execution, Information Disclosure, Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
30 September 2026
Updated
15 October 2026
Weakness
CWE-98

Vendor fix

Update to the latest version beyond 1.6.12.27.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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