CVE-2021-36855
WordPress Booking Ultra Pro plugin <= 1.1.4 - Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability
Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability in Booking Ultra Pro plugin <= 1.1.4 at WordPress.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
WordPress Booking Ultra Pro plugin <= 1.1.4 - Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability
Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability in Booking Ultra Pro plugin <= 1.1.4 at WordPress.
- Record
CVE-2021-36855- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-352, CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2021-23431
Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability in Booking Ultra Pro plugin <= 1.1.4 at WordPress.
- Record
EUVD-2021-23431- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-85qp-4q9c-33vh
Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability in Booking Ultra...
Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability in Booking Ultra Pro plugin <= 1.1.4 at WordPress.
- Record
GHSA-85qp-4q9c-33vh- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-352
- Updated
- 2026-11-02
NVD
Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability in Booking Ultra Pro plugin <= 1.1.4 at WordPress.
- Record
CVE-2021-36855- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79, CWE-352
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-36855 is a medium vulnerability (CVSS 6.1) in Booking Ultra Pro (wordpress Plugin), published September 30, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 20th percentile. No source names a fixed version.
References
wordpress.org/plugins/booking-ultra-pro
patchstack.com/database/vulnerability/booking-ultra-pro/wordpress-booking-ultra-pro-plugin-1-1-4-cross-site-scripting-xss-via-cross-site-request-forgery-csrf-vulnerability?_s_id=cve
nvd.nist.gov/vuln/detail/CVE-2021-36855
github.com/advisories/GHSA-85qp-4q9c-33vh