WordPress FastBook plugin <= 1.1 - Cross Site Scripting (XSS) Vulnerability
Priority LOW 31CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in FasterThemes FastBook fastbook-responsive-appointment-booking-and-scheduling-system allows Stored XSS.This issue affects FastBook: from n/a through <= 1.1.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| FasterThemes | FastBook | up to 1.1 | — | No fix listed | CNA |
- FastBook VendorFasterThemes Affected up to 1.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-25173
- 2026-10-03 Alias added: GHSA-gggx-m9c6-7fxq
More FasterThemes vulnerabilities
- TI-2024-35960 WordPress FastBook plugin <= 1.1 - CSRF to Stored Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2025-19531 WordPress FastBook plugin <= 1.1 - Cross Site Request Forgery (CSRF) Vulnerability CVSS 3.1MEDIUM 4.3
Sources
- CVE-2025-25173 · CVE Program
- CVE-2025-25173 · NVD
- FIRST EPSS
- GHSA-gggx-m9c6-7fxq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences