# CVE-2026-15106: WPBot <= 8.5.6 - Missing Authorization to Unauthenticated Arbitrary Chat Session Deletion via 'userid' Parameter

> Unauthenticated attackers can delete arbitrary chat session records and conversation logs in the WPBot 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:N/I:L/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:** 16 Jul 2026
- **Updated:** 16 Jul 2026
- **Also known as:** GHSA-w9hj-67x9-qq26

## What is CVE-2026-15106?

CVE-2026-15106 is a medium-severity missing authorization vulnerability in quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 8.5.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to delete arbitrary chat session records from the wpbot_user and wpbot_conversation tables, including chat history and conversation logs, by supplying a crafted userid value.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-15106?


## How do I fix CVE-2026-15106?

No fix has been published for CVE-2026-15106 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15106 being exploited?

There is no known exploitation of CVE-2026-15106 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15106 and fix it if it is affected.

What it is: CVE-2026-15106 is a medium-severity missing authorization vulnerability in quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-15106 in the wild and no public exploit code.

Affected product: quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services. 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-2026-15106/ (Markdown: https://insights.sbomify.com/CVE-2026-15106/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15106
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15106
- OSV: https://osv.dev/vulnerability/CVE-2026-15106

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-15106/
Summaries are generated and may contain mistakes; the official description above is the record.