# CVE-2026-0939: Rede Itaú for WooCommerce — Payment PIX, Credit Card and Debit <= 5.1.2 - Unauthenticated Order Status Manipulation

> Unauthenticated attackers can manipulate WooCommerce order statuses by bypassing payment callback verification, marking unpaid orders as paid or failed.

- **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 Jan 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-mw96-jp89-7w8c

## What is CVE-2026-0939?

CVE-2026-0939 is a medium-severity vulnerability in linknacional Rede Itaú for WooCommerce — Payment PIX, Credit Card and Debit, published on 16 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Rede Itaú for WooCommerce plugin for WordPress is vulnerable to order status manipulation due to insufficient verification of data authenticity in all versions up to, and including, 5.1.2. This is due to the plugin failing to verify the authenticity of payment callbacks. This makes it possible for unauthenticated attackers to manipulate WooCommerce order statuses, either marking unpaid orders as paid, or failed.

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

## Which versions are affected by CVE-2026-0939?


## How do I fix CVE-2026-0939?

No fix has been published for CVE-2026-0939 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-0939 being exploited?

There is no known exploitation of CVE-2026-0939 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-0939 and fix it if it is affected.

What it is: CVE-2026-0939 is a medium-severity vulnerability in linknacional Rede Itaú for WooCommerce — Payment PIX, Credit Card and Debit, published on 16 Jan 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-2026-0939 in the wild and no public exploit code.

Affected product: linknacional Rede Itaú for WooCommerce — Payment PIX, Credit Card and Debit. 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-2026-0939/ (Markdown: https://insights.sbomify.com/CVE-2026-0939/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-0939
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-0939
- OSV: https://osv.dev/vulnerability/CVE-2026-0939

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-0939/
Summaries are generated and may contain mistakes; the official description above is the record.