# CVE-2026-16290: ProfileGrid < 6.0.0.0 - Unauthenticated Group Member List Disclosure via pm_get_all_users_from_group

> Unauthenticated attackers can view private group member lists in ProfileGrid WordPress plugin due to missing authorization checks.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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:** 6 Aug 2026
- **Updated:** 6 Aug 2026
- **Also known as:** GHSA-9c4h-7vg9-5hh6

## What is CVE-2026-16290?

CVE-2026-16290 is a medium-severity missing authorization vulnerability in Unknown ProfileGrid, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The ProfileGrid  WordPress plugin before 6.0.0.0 does not perform authorization checks before returning a group's member list, and registers the handler for unauthenticated users, allowing any unauthenticated visitor to disclose the members and their identifiers of any group, including private or closed ones, bypassing the ProfileGrid  WordPress plugin before 6.0.0.0's member-visibility setting.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-16290?


## How do I fix CVE-2026-16290?

No fix has been published for CVE-2026-16290 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-16290 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16290 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-16290 and fix it if it is affected.

What it is: CVE-2026-16290 is a medium-severity missing authorization vulnerability in Unknown ProfileGrid, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16290 exists.

Affected product: Unknown ProfileGrid. 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-2026-16290/ (Markdown: https://insights.sbomify.com/CVE-2026-16290/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-16290
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-16290
- OSV: https://osv.dev/vulnerability/CVE-2026-16290

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-16290/
Summaries are generated and may contain mistakes; the official description above is the record.