Cross-site scripting in codepeople Appointment Hour Booking – Booking Calendar
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Appointment Hour Booking – Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form field configuration parameters in all versions up to, and including, 1.5.60 due to insufficient input sanitization and output escaping on the 'Min length/characters' and 'Max length/characters' field configuration values. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the form builder interface. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 |
|---|---|---|---|---|---|
| codepeople | Appointment Hour Booking – Booking Calendar | up to 1.5.60 | — | No fix listed | CNA |
- Appointment Hour Booking – Booking Calendar Vendorcodepeople Affected up to 1.5.60 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1083
- 2026-10-03 Alias added: GHSA-pwc8-wvmv-h77r
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a5cb1fea-134f-4c81-8f2f-76ee42df7f77?source=cve
- https://plugins.trac.wordpress.org/browser/appointment-hour-booking/trunk/js/fields-admin/01_fbuilder.ftext.js#L64
- https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.57/js/fields-admin/01_fbuilder.ftext.js#L64
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3442650%40appointment-hour-booking&new=3442650%40appointment-hour-booking&sfp_email=&sfph_mail=
More codepeople vulnerabilities
- TI-2024-00790 Booking Calendar < 1.3.83 - CSRF appointment scheduling CVSS 3.1HIGH 8.8
- TI-2024-11385 BookingPress < 1.1.23 - Unauthenticated Export File Download CVSS 3.1HIGH 7.5
- TI-2024-03387 Smart Image Gallery < 1.0.19 - Update/Delete Google API Key via CSRF CVSS 3.1MEDIUM 6.8
- TI-2023-05486 Contact Form Email < 1.3.44 - Editor+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.1
- TI-2024-08220 Polls CP <= 1.0.75 - Admin+ Stored XSS via Custom Styles CVSS 3.1MEDIUM 5.4
- TI-2024-08217 Polls CP <= 1.0.75 - Admin+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.4
Sources
- CVE-2026-1083 · CVE Program
- CVE-2026-1083 · NVD
- FIRST EPSS
- GHSA-pwc8-wvmv-h77r · 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