CVE-2026-92561 json
Booking Calendar <= 11.8.2 - Reflected Cross-Site Scripting via 'options' Parameter
published 2026-09-18 52 d ago modified 2026-09-18 51 d ago also EUVD-2026-82734
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
The Booking Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'options' parameter in all versions up to, and including, 11.8.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The nonce check is bypassed by default because the 'booking_is_nonce_at_front_end' option ships disabled, allowing unauthenticated requests to reach the vulnerable sink without any verification.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 52 d ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- wpdevelop Booking Calendar
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/e8645b58-6b2a-4659-a002-d622453bea42?source=cve
- plugins.trac.wordpress.org /browser/booking/tags/11.8.2/core/timeline/v2/wpbc-class-timeline_v2.php#L593
- plugins.trac.wordpress.org /browser/booking/tags/11.8.2/core/lib/wpbc-ajax.php#L25
- plugins.trac.wordpress.org /browser/booking/tags/11.8.2/core/timeline/v2/wpbc-class-timeline_v2.php#L3385
- plugins.trac.wordpress.org /browser/booking/tags/11.8.2/core/timeline/v2/wpbc-class-timeline_v2.php#L919
- plugins.trac.wordpress.org /changeset?reponame=&old=3699185%40booking&new=3699185%40booking
Sources
- CVE List CVE-2026-92561
- NVD CVE-2026-92561
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.