# CVE-2026-8608: Business logic in Event Monster – Event Manager, Ticket Booking & Registration

> Unauthenticated attackers can bypass payment verification to obtain valid event tickets without paying, affecting Event Monster plugin users.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:** 5 Jun 2026
- **Updated:** 6 Jun 2026
- **Also known as:** GHSA-5vph-83m8-9635

## What is CVE-2026-8608?

CVE-2026-8608 is a medium-severity vulnerability in awordpresslife Event Monster – Event Manager, Ticket Booking & Registration, published on 5 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Event Monster – Event Management, Events Calendar, Tickets plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in versions up to, and including, 2.1.0. This is due to the capture_payment() AJAX handler (registered via wp_ajax_nopriv_em_capture_payment) trusting client-supplied payment data — including transaction ID, amount, and payment status — without performing any server-side verification against the PayPal API or any other payment gateway, and without nonce or capability checks. This makes it possible for unauthenticated attackers to forge payment records, mark bookings as Completed, and obtain confirmation emails containing valid QR code tickets without making any actual payment.

Weakness: CWE-345 (Insufficient Verification of Data Authenticity)

## Which versions are affected by CVE-2026-8608?


## How do I fix CVE-2026-8608?

No fix has been published for CVE-2026-8608 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-8608 being exploited?

There is no known exploitation of CVE-2026-8608 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-8608 and fix it if it is affected.

What it is: CVE-2026-8608 is a medium-severity vulnerability in awordpresslife Event Monster – Event Manager, Ticket Booking & Registration, published on 5 Jun 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-2026-8608 in the wild and no public exploit code.

Affected product: awordpresslife Event Monster – Event Manager, Ticket Booking & Registration. 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-2026-8608/ (Markdown: https://insights.sbomify.com/CVE-2026-8608/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-8608
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-8608
- OSV: https://osv.dev/vulnerability/CVE-2026-8608

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-8608/
Summaries are generated and may contain mistakes; the official description above is the record.