# CVE-2021-20714: Path traversal in WP Fastest Cache

> Administrators can delete arbitrary files on the server via a directory traversal vulnerability in the WP Fastest Cache plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-9j72-vvrm-mh5p

## What is CVE-2021-20714?

CVE-2021-20714 is a medium-severity path traversal vulnerability in Emre Vona WP Fastest Cache, published on 27 Apr 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Directory traversal vulnerability in WP Fastest Cache versions prior to 0.9.1.7 allows a remote attacker with administrator privileges to delete arbitrary files on the server via unspecified vectors.

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

## Which versions are affected by CVE-2021-20714?

It affects 1 product.


Products: Wpfastestcache Wp Fastest Cache.

## How do I fix CVE-2021-20714?

No fix has been published for CVE-2021-20714 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-20714 being exploited?

There is no known exploitation of CVE-2021-20714 in the wild and no public exploit code.

## Other vulnerabilities in Emre Vona WP Fastest Cache

- [CVE-2015-9316](https://insights.sbomify.com/CVE-2015-9316/): SQL injection in n/a (critical 9.8)
- [CVE-2019-13635](https://insights.sbomify.com/CVE-2019-13635/): Path traversal in n/a (critical 9.1)
- [CVE-2021-24869](https://insights.sbomify.com/CVE-2021-24869/): WP Fastest Cache < 0.9.5 - Subscriber+ SQL Injection (high 8.8)
- [CVE-2023-1938](https://insights.sbomify.com/CVE-2023-1938/): WP Fatest Cache < 1.1.5 - Blind SSRF via CSRF (high 8.8)
- [CVE-2018-17584](https://insights.sbomify.com/CVE-2018-17584/): Cross-site request forgery in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-20714 and fix it if it is affected.

What it is: CVE-2021-20714 is a medium-severity path traversal vulnerability in Emre Vona WP Fastest Cache, published on 27 Apr 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-20714 in the wild and no public exploit code.

Affected product: Emre Vona WP Fastest Cache. 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-2021-20714/ (Markdown: https://insights.sbomify.com/CVE-2021-20714/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-20714
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-20714
- OSV: https://osv.dev/vulnerability/CVE-2021-20714

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-20714/
Summaries are generated and may contain mistakes; the official description above is the record.