Fluent Booking <= 2.1.1 — Authenticated (Calendar Manager+) Information Exposure
CVE-2026-9576Published · Updated Action summary
Affected: ≤2.1.1Update to 2.1.2 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-200 Information Exposure
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Events Calendar Solution fluent-booking
- Affected≤ 2.1.1
- Patched in2.1.2
Update to 2.1.2 or newer.
You are affected if you run ≤ 2.1.1. Version 2.1.2 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Events Calendar Solution.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.1.2, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Events Calendar Solution to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Md Amin Ullah Sheikh.
The Fluent Booking plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 2.1.1. This is due to missing per-booking access verification on the attendee export endpoint, which only checked for a broad Calendar Manager role rather than validating the requesting user's access to the specific booking group. This makes it possible for authenticated attackers, with calendar manager-level access and above, to export attendee booking data belonging to calendar groups they do not have permission to manage by supplying an arbitrary group_id parameter.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
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| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤2.1.0Update to 2.1.1 | CVE-2026-57638 | |
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Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.