CVE-2026-89294 json
Simply Schedule Appointments <= 1.6.12.27 - Authenticated (Subscriber+) Local File Inclusion via 'ssa_locale' Parameter
published 2026-09-30 40 d ago modified 2026-09-30 39 d ago also EUVD-2026-89654
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
The Simply Schedule Appointments plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 1.6.12.27 via the 'ssa_locale' parameter parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to include and execute arbitrary .php files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where .php file types can be uploaded and included. Notably, exploitation does not require authentication in practice, as the locale filter is installed unconditionally on every request during plugins_loaded and the callback performs no nonce or capability check before returning the raw GET parameter value.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 39 d ago
Exploit prediction
0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- croixhaug Simply Schedule Appointments
Classification
- Weakness
-
- CWE-98 Improper Control of Filename for Include/Require Statement in PHP Program
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/aab8f2ae-993b-4893-81cc-1b8a1a4ef84b?source=cve
- plugins.trac.wordpress.org /browser/simply-schedule-appointments/tags/1.6.12.27/includes/class-translation.php#L108
- plugins.trac.wordpress.org /browser/simply-schedule-appointments/tags/1.6.12.27/includes/class-translation.php#L67
- plugins.trac.wordpress.org /browser/simply-schedule-appointments/tags/1.6.12.27/includes/class-translation.php#L50
Sources
- CVE List CVE-2026-89294
- NVD CVE-2026-89294
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.