Simply Schedule Appointments < 1.6.12.17 - Team Member+ User Email Disclosure via Users and Customers REST Endpoints
Priority MEDIUM 62CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-200.
Summary
The Simply Schedule Appointments WordPress plugin before 1.6.12.17 does not restrict the user records returned by some of its REST endpoints to those the requester is entitled to see, allowing users with a low-privileged staff role to disclose the names and email addresses of arbitrary registered users.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00371 31st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Simply Schedule Appointments (Unknown): 1.6.12.17
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Simply Schedule Appointments | before 1.6.12.17 | 1.6.12.17 | Patch available | CNA |
- Simply Schedule Appointments VendorUnknown Affected before 1.6.12.17 Fixed in 1.6.12.17 Patch available CNA
Remediation
- Fix · CNA Simply Schedule Appointments (Unknown) Fixed in 1.6.12.17
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16541
- 2026-10-03 Alias added: GHSA-9337-jrpr-pg7c
References
Sources
- CVE-2026-16541 · CVE Program
- CVE-2026-16541 · NVD
- FIRST EPSS
- GHSA-9337-jrpr-pg7c · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences