# CVE-2026-91008: Event Booking Manager for WooCommerce < 5.3.8 - Unauthenticated Attendee PII Disclosure via Booking Confirmation Panel

> Unauthenticated attackers can retrieve attendee PII via booking references in Event Booking Manager for WooCommerce when using native checkout.

- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Sep 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-vc5f-85m8-x67v

## What is CVE-2026-91008?

CVE-2026-91008 is a low-severity missing authorization vulnerability in Unknown Event Booking Manager for WooCommerce, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Event Booking Manager for WooCommerce  WordPress plugin before 5.3.8 does not perform an ownership or authorization check before rendering booking confirmation details, allowing unauthenticated attackers to retrieve registered attendees' personal information (full name, email address, phone number, and custom registration fields) by supplying an enumerable booking reference. Exploitation is limited to sites configured to use the Event Booking Manager for WooCommerce  WordPress plugin before 5.3.8's native (non-WooCommerce) checkout, which is not the default.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-91008?


## How do I fix CVE-2026-91008?

No fix has been published for CVE-2026-91008 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-91008 being exploited?

There is no known exploitation of CVE-2026-91008 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-91008 and fix it if it is affected.

What it is: CVE-2026-91008 is a low-severity missing authorization vulnerability in Unknown Event Booking Manager for WooCommerce, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-91008 in the wild and no public exploit code.

Affected product: Unknown Event Booking Manager for WooCommerce. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-91008/ (Markdown: https://insights.sbomify.com/CVE-2026-91008/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-91008
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-91008
- OSV: https://osv.dev/vulnerability/CVE-2026-91008

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-91008/
Summaries are generated and may contain mistakes; the official description above is the record.