CVE-2026-92561
Booking Calendar <= 11.8.2 - Reflected Cross-Site Scripting via 'options' Parameter
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- wpdevelop Booking Calendar
through 11.8.2
References 6
plugins.trac.wordpress.org
- browser/booking/tags/11.8.2/core/timeline/v2/wpbc-class-timeline_v2.php#L593
- browser/booking/tags/11.8.2/core/lib/wpbc-ajax.php#L25
- browser/booking/tags/11.8.2/core/timeline/v2/wpbc-class-timeline_v2.php#L3385
- browser/booking/tags/11.8.2/core/timeline/v2/wpbc-class-timeline_v2.php#L919
- changeset?reponame=&old=3699185%40booking&new=3699185%40booking