# CVE-2026-4248: Information disclosure in Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin

> Authenticated contributors can expose administrator password reset tokens via shortcode templates, enabling account takeover.

- **Severity:** High 8.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 27 Mar 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-65gh-443q-r8g2

## What is CVE-2026-4248?

CVE-2026-4248 is a high-severity vulnerability in ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin, published on 27 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The Ultimate Member plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.11.2. This is due to the '{usermeta:password_reset_link}' template tag being processed within post content via the '[um_loggedin]' shortcode, which generates a valid password reset token for the currently logged-in user viewing the page. This makes it possible for authenticated attackers, with Contributor-level access and above, to craft a malicious pending post that, when previewed by an Administrator, generates a password reset token for the Administrator and exfiltrates it to an attacker-controlled server, leading to full account takeover.

Weakness: CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2026-4248?


## How do I fix CVE-2026-4248?

No fix has been published for CVE-2026-4248 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4248 being exploited?

There is no known exploitation of CVE-2026-4248 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4248 and fix it if it is affected.

What it is: CVE-2026-4248 is a high-severity vulnerability in ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin, published on 27 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-4248 in the wild and no public exploit code.

Affected product: ultimatemember Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin. 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-2026-4248/ (Markdown: https://insights.sbomify.com/CVE-2026-4248/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4248
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4248
- OSV: https://osv.dev/vulnerability/CVE-2026-4248

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-4248/
Summaries are generated and may contain mistakes; the official description above is the record.