# CVE-2023-37890: WordPress KB Support Plugin <= 1.5.88 is vulnerable to Broken Access Control

> Subscribers can view other customers' data due to missing authorization checks in the KB Support WordPress plugin.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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:** 30 Nov 2023
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-85c9-pfrr-38q8

## What is CVE-2023-37890?

CVE-2023-37890 is a medium-severity missing authorization vulnerability in WPOmnia KB Support – WordPress Help Desk and Knowledge Base, published on 30 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Missing Authorization vulnerability in WPOmnia KB Support – WordPress Help Desk and Knowledge Base allows Accessing Functionality Not Properly Constrained by ACLs. Users with a role as low as a subscriber can view other customers.This issue affects KB Support – WordPress Help Desk and Knowledge Base: from n/a through 1.5.88.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2023-37890?

It affects 1 product.


Products: Logon Kb Support.

## How do I fix CVE-2023-37890?

No fix has been published for CVE-2023-37890 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-37890 being exploited?

There is no known exploitation of CVE-2023-37890 in the wild and no public exploit code.

## Other vulnerabilities in WPOmnia KB Support – WordPress Help Desk and Knowledge Base

- [CVE-2023-25983](https://insights.sbomify.com/CVE-2023-25983/): WordPress KB Support Plugin <= 1.5.84 is vulnerable to CSV Injection (high 8.8)
- [CVE-2024-8548](https://insights.sbomify.com/CVE-2024-8548/): Missing authorization in KB Support – Customer Support Ticket & Helpdesk Plugin, Knowledge Base Plugin (high 8.1)
- [CVE-2024-8632](https://insights.sbomify.com/CVE-2024-8632/): Missing authorization in KB Support – Customer Support Ticket & Helpdesk Plugin, Knowledge Base Plugin (medium 6.5)
- [CVE-2024-33589](https://insights.sbomify.com/CVE-2024-33589/): WordPress KB Support plugin <= 1.6.0 - Broken Access Control vulnerability (medium 6.5)
- [CVE-2025-24741](https://insights.sbomify.com/CVE-2025-24741/): WordPress KB Support plugin <= 1.6.7 - Open Redirection vulnerability (medium 4.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-37890 and fix it if it is affected.

What it is: CVE-2023-37890 is a medium-severity missing authorization vulnerability in WPOmnia KB Support – WordPress Help Desk and Knowledge Base, published on 30 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-37890 in the wild and no public exploit code.

Affected product: WPOmnia KB Support – WordPress Help Desk and Knowledge Base. 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-2023-37890/ (Markdown: https://insights.sbomify.com/CVE-2023-37890/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-37890
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-37890
- OSV: https://osv.dev/vulnerability/CVE-2023-37890

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-37890/
Summaries are generated and may contain mistakes; the official description above is the record.