# CVE-2021-47751: CuteEditor for PHP 6.6 - Directory Traversal

> Attackers can exploit a directory traversal flaw in CuteEditor for PHP to write arbitrary files to the web root, potentially leading to code execution.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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:** 13 Jan 2026
- **Updated:** 28 Jul 2026
- **Also known as:** GHSA-7jgq-pvpg-hqwq

## What is CVE-2021-47751?

CVE-2021-47751 is a medium-severity path traversal vulnerability in Phphtmledit CuteEditor, published on 13 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

CuteEditor for PHP (now referred to as Rich Text Editor) 6.6 contains a directory traversal vulnerability in the browse template feature that allows attackers to write files to arbitrary web root directories. Attackers can exploit the ServerMapPath() function by renaming uploaded HTML files using directory traversal sequences to write files outside the intended template directory.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2021-47751?

It affects 1 product.


Products: Phphtmledit Rich Text Editor.

## How do I fix CVE-2021-47751?

No fix has been published for CVE-2021-47751 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47751 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47751 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47751 and fix it if it is affected.

What it is: CVE-2021-47751 is a medium-severity path traversal vulnerability in Phphtmledit CuteEditor, published on 13 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47751 exists.

Affected product: Phphtmledit CuteEditor. 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-2021-47751/ (Markdown: https://insights.sbomify.com/CVE-2021-47751/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47751
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47751
- OSV: https://osv.dev/vulnerability/CVE-2021-47751

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-47751/
Summaries are generated and may contain mistakes; the official description above is the record.