CVE-2026-6286Booking for Appointments and Events Calendar <= 2.2 - Unauthenticated Stored Cross-Site Scripting via Customer Name Fields in Booking Submission
- 7.2HighCVSS base score
- 0.62%Exploitation in 30 daysEPSS · top 50% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The Booking for Appointments and Events Calendar – Amelia plugin for WordPress is vulnerable to Stored Cross-Site Scripting via customer name fields in versions up to and including 2.2. This is due to an authentication bypass where the AddBookingCommand explicitly skips nonce verification (Command.php line 186), allowing unauthenticated users to submit booking data. While the plugin applies sanitize_text_field() to customer firstName and lastName fields (BookingApplicationService.php lines 302-308), this function only removes HTML tags and preserves special characters including double quotes. The vulnerability manifests in the administrative Calendar view where a FullCalendar eventContent callback interpolates customer names directly into JavaScript template literals (redesign/dist/index.js line 199) and renders them via innerHTML without proper HTML entity encoding. Because double quotes are preserved, an attacker can inject payloads like '" onmouseover="alert(document.cookie)"' to break out of the title attribute and inject malicious event handlers. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that will execute when an administrator accesses the Calendar page and hovers over the malicious appointment.
Timeline
ID reserved
By Wordfence
- 5 months later
· 5 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| NVDNVD · Deferred | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.62% · top 50% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Affected products
melograno · Booking for Appointments and Events Calendar – Amelia
- affected ≤ 2.2
References
References11
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a330336e-82ad-41f4-b1b1-d93d9905aabd?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/ameliabooking/trunk/redesign/dist/index.js#L199 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/ameliabooking/tags/2.1.3/redesign/dist/index.js#L199 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/ameliabooking/trunk/src/Application/Services/Booking/BookingApplicationService.php#L302 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/ameliabooking/tags/2.1.3/src/Application/Services/Booking/BookingApplicationService.php#L302 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/ameliabooking/trunk/src/Application/Commands/Command.php#L186 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/ameliabooking/tags/2.1.3/src/Application/Commands/Command.php#L186 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/ameliabooking/trunk/src/Application/Commands/Booking/Appointment/AddBookingCommandHandler.php#L46 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/ameliabooking/tags/2.1.3/src/Application/Commands/Booking/Appointment/AddBookingCommandHandler.php#L46 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset/3499608/ (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset/3505826/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-67465 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-6286)Record last updated .