# CVE-2026-110721: Missing authorization in NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar

> Unauthenticated attackers can inject arbitrary social-proof entries into NotificationX campaigns due to missing authorization checks on the popup-submit REST route.

- **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:** 16 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** GHSA-q86v-2x23-2567

## What is CVE-2026-110721?

CVE-2026-110721 is a medium-severity missing authorization vulnerability in wpdevteam NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The NotificationX plugin for WordPress is vulnerable to Missing Authorization leading to arbitrary content injection in versions up to, and including, 3.3.3 The /notificationx/v1/popup-submit REST route is registered with permission_callback => '__return_true', and the handler at PopupNotification::handle_popup_submission() accepts an attacker-controlled nx_id, loads whichever NotificationX campaign that id points to, and copies that campaign's own source into the new entry without verifying that the campaign is a Popup Notification or Exit Intent Popup (the two sources this form is intended to serve). This makes it possible for unauthenticated attackers to inject forged social-proof entries (name, title, message, email, theme) into any enabled non-popup NotificationX campaign — WP Comments, WooCommerce/EDD/Give sales, reviews, etc.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-110721?


## How do I fix CVE-2026-110721?

No fix has been published for CVE-2026-110721 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-110721 being exploited?

There is no known exploitation of CVE-2026-110721 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-110721 and fix it if it is affected.

What it is: CVE-2026-110721 is a medium-severity missing authorization vulnerability in wpdevteam NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar, published on 16 Oct 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-2026-110721 in the wild and no public exploit code.

Affected product: wpdevteam NotificationX – FOMO, Live Sales Notification, WooCommerce Sales Popup, GDPR, Social Proof, Announcement Banner & Floating Notification Bar. 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-2026-110721/ (Markdown: https://insights.sbomify.com/CVE-2026-110721/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-110721
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110721
- OSV: https://osv.dev/vulnerability/CVE-2026-110721

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-110721/
Summaries are generated and may contain mistakes; the official description above is the record.