# CVE-2020-25881: Path traversal in n/a

> An attacker can exploit a path traversal vulnerability in RKCMS to read or delete arbitrary files on the server.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 29 Oct 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-9rwq-2qv8-4jpv

## What is CVE-2020-25881?

CVE-2020-25881 is a medium-severity path traversal vulnerability in n/a, published on 29 Oct 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A vulnerability was discovered in the filename parameter in pathindex.php?r=cms-backend/attachment/delete&sub=&filename=../../../../111.txt&filetype=image/jpeg of the master version of RKCMS. This vulnerability allows for an attacker to perform a directory traversal via a crafted .txt file.

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

## Which versions are affected by CVE-2020-25881?

It affects 1 product.


Products: Ranko Rkcms.

## How do I fix CVE-2020-25881?

No fix has been published for CVE-2020-25881 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-25881 being exploited?

There is no known exploitation of CVE-2020-25881 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-25881 and fix it if it is affected.

What it is: CVE-2020-25881 is a medium-severity path traversal vulnerability in n/a, published on 29 Oct 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-25881 in the wild and no public exploit code.

Affected product: n/a. 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-2020-25881/ (Markdown: https://insights.sbomify.com/CVE-2020-25881/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-25881
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-25881
- OSV: https://osv.dev/vulnerability/CVE-2020-25881

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-25881/
Summaries are generated and may contain mistakes; the official description above is the record.