# CVE-2026-4348: BetterDocs Pro <= 3.7.0 - Unauthenticated SQL Injection via Encyclopedia 'limit' Parameter

> Unauthenticated attackers can extract sensitive database information via SQL injection in the BetterDocs Pro plugin when the Encyclopedia feature is enabled.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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:** 7 May 2026
- **Updated:** 7 May 2026
- **Also known as:** GHSA-89cx-53rv-jcx8

## What is CVE-2026-4348?

CVE-2026-4348 is a high-severity SQL injection vulnerability in BetterDocs Pro, published on 7 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The BetterDocs Pro plugin for WordPress is vulnerable to SQL Injection via the `get_current_letter_docs` and `docs_sort_by_letter` AJAX actions in all versions up to, and including, 3.7.0. This is due to the `limit` POST parameter being interpolated directly into a SQL query string before being passed to `$wpdb->prepare()`, which only parameterizes other variables. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The Encyclopedia feature must be enabled in BetterDocs Pro settings for the vulnerability to be exploitable.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-4348?


## How do I fix CVE-2026-4348?

No fix has been published for CVE-2026-4348 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4348 being exploited?

There is no known exploitation of CVE-2026-4348 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4348 and fix it if it is affected.

What it is: CVE-2026-4348 is a high-severity SQL injection vulnerability in BetterDocs Pro, published on 7 May 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-2026-4348 in the wild and no public exploit code.

Affected product: BetterDocs Pro. 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-2026-4348/ (Markdown: https://insights.sbomify.com/CVE-2026-4348/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4348
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4348
- OSV: https://osv.dev/vulnerability/CVE-2026-4348

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4348/
Summaries are generated and may contain mistakes; the official description above is the record.