# CVE-2017-5539: Path traversal in n/a

> Attackers can bypass directory traversal filters to read or delete arbitrary files on the server.

- **Severity:** Critical 9.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 23 Jan 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-qm48-3ggc-g645

## What is CVE-2017-5539?

CVE-2017-5539 is a critical path traversal vulnerability in n/a, published on 23 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An attacker can use ..\/ to bypass the filter rule. Then, this attacker can exploit this vulnerability to delete or read any files on the server. It can also be used to determine whether a file exists.

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

## Which versions are affected by CVE-2017-5539?

It affects 1 product.


Products: B2evolution B2evolution.

## How do I fix CVE-2017-5539?

No fix has been published for CVE-2017-5539 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-5539 being exploited?

There is no known exploitation of CVE-2017-5539 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2016-8901](https://insights.sbomify.com/CVE-2016-8901/): Deserialization in n/a (critical 9.8)
- [CVE-2017-1000423](https://insights.sbomify.com/CVE-2017-1000423/): Code injection in n/a (critical 9.8)
- [CVE-2022-30935](https://insights.sbomify.com/CVE-2022-30935/): Auth bypass in n/a (critical 9.1)
- [CVE-2021-28242](https://insights.sbomify.com/CVE-2021-28242/): SQL injection in n/a (high 8.8)
- [CVE-2017-5480](https://insights.sbomify.com/CVE-2017-5480/): Path traversal in n/a (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-5539 and fix it if it is affected.

What it is: CVE-2017-5539 is a critical path traversal vulnerability in n/a, published on 23 Jan 2017. 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-2017-5539 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-2017-5539/ (Markdown: https://insights.sbomify.com/CVE-2017-5539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-5539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-5539
- OSV: https://osv.dev/vulnerability/CVE-2017-5539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-5539/
Summaries are generated and may contain mistakes; the official description above is the record.