WordPress Booking Calendar Contact Form 1.0.23 Privilege Escalation Stored XSS
Published Jun 15, 2026
5.1
MEDIUMCVSS 4.0
EPSS 0.22%
Description
WordPress Booking Calendar Contact Form 1.0.23 contains privilege escalation and stored cross-site scripting vulnerabilities that allow authenticated users to modify plugin options and inject malicious scripts by failing to verify user privileges and sanitize input parameters. Attackers with subscriber-level accounts can inject XSS payloads through parameters like price, name, calendar_language, and email_confirmation_to_user via admin-ajax.php and admin.php endpoints to execute arbitrary JavaScript in administrator browsers.
Affected products
-
- Version 0StatusaffectedConstraints<=1.0.23
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Dwbooster | Booking Calendar Contact Form | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jun 15, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jun–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.22% (0.00224) | 11.82th | v5 (v2026.06.15) |
| Jun 16, 2026 | 0.23% (0.00231) | 13.73th | v5 (v2026.06.15) |
References (3)
- http://wordpress.dwbooster.com/ product
- https://www.exploit-db.com/exploits/39423 exploit
- https://www.vulncheck.com/advisories/wordpress-booking-calendar-contact-form-privilege-escalation-stored-xss third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| http://wordpress.dwbooster.com/ | product | |
| https://www.exploit-db.com/exploits/39423 | exploit | |
| https://www.vulncheck.com/advisories/wordpress-booking-calendar-contact-form-privilege-escalation-stored-xss | third-party-advisory |
Change history (0)
No recorded changes yet.