# CVE-2026-97337: Missing authorization in Simple Membership

> Unauthenticated attackers can redirect activation emails to steal credentials and take over pending member accounts in the Simple Membership WordPress plugin.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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:** 3 Oct 2026
- **Updated:** 3 Oct 2026
- **Also known as:** GHSA-7wr9-4367-v9vm

## What is CVE-2026-97337?

CVE-2026-97337 is a high-severity missing authorization vulnerability in wpinsider-1 Simple Membership, published on 3 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Simple Membership plugin for WordPress is vulnerable to unauthorized modification of data and sensitive information disclosure in versions up to, and including, 4.8.3 via the resend-activation and email-activation endpoints. The endpoints are dispatched from SwpmInitTimeTasks::check_and_do_email_activation() on frontend init with no authentication, nonce, capability, or ownership check, and the recipient address used by SwpmRegistration::send_reg_email() is taken from an attacker-controlled $_POST['email'] parameter (overriding the member's registered address). This makes it possible for unauthenticated attackers to redirect an arbitrary pending member's activation email — and the follow-up 'registration complete' email containing the member's username and plaintext password — to an attacker-chosen address, and to then activate that member's account without their consent.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-97337?


## How do I fix CVE-2026-97337?

No fix has been published for CVE-2026-97337 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-97337 being exploited?

There is no known exploitation of CVE-2026-97337 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-97337 and fix it if it is affected.

What it is: CVE-2026-97337 is a high-severity missing authorization vulnerability in wpinsider-1 Simple Membership, published on 3 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-2026-97337 in the wild and no public exploit code.

Affected product: wpinsider-1 Simple Membership. 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-2026-97337/ (Markdown: https://insights.sbomify.com/CVE-2026-97337/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-97337
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-97337
- OSV: https://osv.dev/vulnerability/CVE-2026-97337

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-97337/
Summaries are generated and may contain mistakes; the official description above is the record.