# CVE-2026-15369: Privilege escalation in Custom User Registration Fields for WooCommerce

> Unauthenticated attackers can escalate privileges to Administrator by manipulating the user role parameter during checkout if role selection is enabled.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Aug 2026
- **Updated:** 1 Sep 2026
- **Also known as:** GHSA-8fc6-vv8j-hx7j

## What is CVE-2026-15369?

CVE-2026-15369 is a critical vulnerability in Addify Custom User Registration Fields for WooCommerce, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Custom User Registration Fields for WooCommerce plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 2.2.3. This is due to the plugin accepting an attacker-controlled afreg_select_user_role value from the unauthenticated WooCommerce Store API /wc/store/v1/checkout request in the af_reg_checkout_data_to_order_meta_data_block() function, persisting it in order meta, and then passing it directly to WP_User::add_role() in the af_reg_custom_order_processing_function() function (hooked to woocommerce_thankyou) without validating against the plugin's admin-configured allowed role list. This makes it possible for unauthenticated attackers to elevate their privileges to Administrator by creating an account during checkout with a modified JSON body specifying administrator (or any other role slug) as the desired role. Note: The exploit requires the "User Role Selection" setting to be enabled.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2026-15369?


## How do I fix CVE-2026-15369?

No fix has been published for CVE-2026-15369 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15369 being exploited?

There is no known exploitation of CVE-2026-15369 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15369 and fix it if it is affected.

What it is: CVE-2026-15369 is a critical vulnerability in Addify Custom User Registration Fields for WooCommerce, published on 29 Aug 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-2026-15369 in the wild and no public exploit code.

Affected product: Addify Custom User Registration Fields 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-2026-15369/ (Markdown: https://insights.sbomify.com/CVE-2026-15369/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15369
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15369
- OSV: https://osv.dev/vulnerability/CVE-2026-15369

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15369/
Summaries are generated and may contain mistakes; the official description above is the record.