# CVE-2026-16546: Wired Impact Volunteer Management < 2.8.2 - Subscriber+ Arbitrary RSVP Removal via wivm_remove_rsvp

> Subscribers can remove arbitrary RSVPs from volunteer opportunities due to missing authorization checks in the Wired Impact Volunteer Management plugin.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Aug 2026
- **Updated:** 4 Aug 2026
- **Also known as:** GHSA-32f3-4hg9-xrh4

## What is CVE-2026-16546?

CVE-2026-16546 is a medium-severity missing authorization vulnerability in Unknown Wired Impact Volunteer Management, published on 4 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Wired Impact Volunteer Management WordPress plugin before 2.8.2 does not have authorisation checks in one of its AJAX actions, and does not verify that the RSVP being removed belongs to the requesting user, allowing users with a role as low as Subscriber to remove arbitrary users' RSVPs from any volunteer opportunity.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-16546?


## How do I fix CVE-2026-16546?

No fix has been published for CVE-2026-16546 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-16546 being exploited?

There is no known exploitation of CVE-2026-16546 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-16546 and fix it if it is affected.

What it is: CVE-2026-16546 is a medium-severity missing authorization vulnerability in Unknown Wired Impact Volunteer Management, published on 4 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-16546 in the wild and no public exploit code.

Affected product: Unknown Wired Impact Volunteer Management. 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-2026-16546/ (Markdown: https://insights.sbomify.com/CVE-2026-16546/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-16546
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-16546
- OSV: https://osv.dev/vulnerability/CVE-2026-16546

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-16546/
Summaries are generated and may contain mistakes; the official description above is the record.