# CVE-2018-19586: Path traversal in n/a

> Authenticated attackers can exploit a directory traversal flaw in file uploads to write arbitrary files, potentially achieving remote code execution.

- **Severity:** Critical 9.9 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **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:** 9 Apr 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-x76g-gm3f-g7cw

## What is CVE-2018-19586?

CVE-2018-19586 is a critical path traversal vulnerability in n/a, published on 9 Apr 2019. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Silverpeas 5.15 through 6.0.2 is affected by an authenticated Directory Traversal vulnerability that can be triggered during file uploads because core/webapi/upload/FileUploadData.java mishandles a StringUtil.java call. This vulnerability enables regular users to write arbitrary files on the underlying system with privileges of the user running the application. Especially, an attacker may leverage the vulnerability to write an executable JSP file in an exposed web directory to execute commands on the underlying system.

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

## Which versions are affected by CVE-2018-19586?

It affects 1 product.


Products: Silverpeas Silverpeas.

## How do I fix CVE-2018-19586?

No fix has been published for CVE-2018-19586 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-19586 being exploited?

There is no known exploitation of CVE-2018-19586 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-42850](https://insights.sbomify.com/CVE-2024-42850/): Silverpeas vulnerable to password complexity rule bypass (critical 9.8)
- [CVE-2024-36042](https://insights.sbomify.com/CVE-2024-36042/): Silverpeas authentication bypass (critical 9.8)
- [CVE-2023-47322](https://insights.sbomify.com/CVE-2023-47322/): Cross Site Request Forgery in Silverpeas (high 8.8)
- [CVE-2023-47326](https://insights.sbomify.com/CVE-2023-47326/): Cross Site Request Forgery in Silverpeas (high 8.8)
- [CVE-2023-47320](https://insights.sbomify.com/CVE-2023-47320/): Broken access control in Silverpeas (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-19586 and fix it if it is affected.

What it is: CVE-2018-19586 is a critical path traversal vulnerability in n/a, published on 9 Apr 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-19586 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-2018-19586/ (Markdown: https://insights.sbomify.com/CVE-2018-19586/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-19586
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-19586
- OSV: https://osv.dev/vulnerability/CVE-2018-19586

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-19586/
Summaries are generated and may contain mistakes; the official description above is the record.