# CVE-2026-15988: AI Engine <= 3.6.5 - Cross-Site Request Forgery to Privilege Escalation via REQUEST_URI Substring Match

> Unauthenticated attackers can create administrator accounts via CSRF by tricking admins into clicking a link, leading to full site compromise.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Aug 2026
- **Updated:** 3 Aug 2026
- **Also known as:** GHSA-rw28-999g-8cc4

## What is CVE-2026-15988?

CVE-2026-15988 is a high-severity vulnerability in tigroumeow AI Engine – The Chatbot, AI Framework & MCP for WordPress, published on 1 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.6.5 This is due to missing or incorrect nonce validation on the reauth_for_authorize function. This makes it possible for unauthenticated attackers to create new administrator accounts with attacker-supplied credentials via a CSRF-based REST authentication bypass, granted they can trick a site administrator into performing an action such as clicking on a link. This bypass can be combined with WordPress's ?_method=POST method-override support to convert a top-navigation GET request into an authenticated POST to the REST users endpoint, requiring no existing account on the attacker's part.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2026-15988?


## How do I fix CVE-2026-15988?

No fix has been published for CVE-2026-15988 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15988 being exploited?

There is no known exploitation of CVE-2026-15988 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15988 and fix it if it is affected.

What it is: CVE-2026-15988 is a high-severity vulnerability in tigroumeow AI Engine – The Chatbot, AI Framework & MCP for WordPress, published on 1 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-15988 in the wild and no public exploit code.

Affected product: tigroumeow AI Engine – The Chatbot, AI Framework & MCP for WordPress. 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-2026-15988/ (Markdown: https://insights.sbomify.com/CVE-2026-15988/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15988
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15988
- OSV: https://osv.dev/vulnerability/CVE-2026-15988

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-15988/
Summaries are generated and may contain mistakes; the official description above is the record.