# CVE-2026-8848: Missing authorization in Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder

> Authenticated editors can install arbitrary plugins via a legacy endpoint if a valid Pro license is active but not installed, leading to remote code execution.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jul 2026
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-hjcg-vxr5-fgc7

## What is CVE-2026-8848?

CVE-2026-8848 is a high-severity missing authorization vulnerability in danieliser Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder, published on 9 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

The Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.22.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with editor-level access and above, to install and activate an arbitrary plugin from an attacker-controlled URL, leading to remote code execution. Exploitation requires that a valid Popup Maker Pro license is active on the target site and that Popup Maker Pro is not yet installed, as these conditions are necessary for the legacy v1/connect/info endpoint to issue the bearer token used to satisfy the install endpoint's only non-spoofable validation check.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-8848?


## How do I fix CVE-2026-8848?

No fix has been published for CVE-2026-8848 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-8848 being exploited?

There is no known exploitation of CVE-2026-8848 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-8848 and fix it if it is affected.

What it is: CVE-2026-8848 is a high-severity missing authorization vulnerability in danieliser Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder, published on 9 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-8848 in the wild and no public exploit code.

Affected product: danieliser Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder. 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-2026-8848/ (Markdown: https://insights.sbomify.com/CVE-2026-8848/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-8848
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-8848
- OSV: https://osv.dev/vulnerability/CVE-2026-8848

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-8848/
Summaries are generated and may contain mistakes; the official description above is the record.