# CVE-2026-11454: Groundhogg — CRM, Newsletters, and Marketing Automation <= 4.5.2 - Insecure Direct Object Reference

> Authenticated attackers with limited roles can read any contact record, including PII and user capabilities, due to missing object-level authorization checks.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:** 5 Aug 2026
- **Updated:** 5 Aug 2026
- **Also known as:** GHSA-52xv-wqqv-x9g6

## What is CVE-2026-11454?

CVE-2026-11454 is a medium-severity missing authorization vulnerability in trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.5.2 via the GET /wp-json/gh/v4/contacts/<id> REST endpoint. The endpoint's permission callback checks only the role-level view_contacts capability and read_single() returns the full contact record by sequential integer ID without the object-level view_contact ownership check applied elsewhere in the codebase. This makes it possible for authenticated attackers holding view_contacts but not view_others_contacts — notably Groundhogg's built-in Sales Rep role, designed to see only its own contacts — to read any contact record on the site, including PII, contact meta, owner IDs, the admin edit URL, and (for contacts linked to a WordPress user) that user's full capability set.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-11454?


## How do I fix CVE-2026-11454?

No fix has been published for CVE-2026-11454 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-11454 being exploited?

There is no known exploitation of CVE-2026-11454 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-11454 and fix it if it is affected.

What it is: CVE-2026-11454 is a medium-severity missing authorization vulnerability in trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation, published on 5 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-2026-11454 in the wild and no public exploit code.

Affected product: trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation. 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-2026-11454/ (Markdown: https://insights.sbomify.com/CVE-2026-11454/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-11454
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11454
- OSV: https://osv.dev/vulnerability/CVE-2026-11454

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-11454/
Summaries are generated and may contain mistakes; the official description above is the record.