# CVE-2016-7964: Server-side request forgery in n/a

> Attackers can scan internal network ports via Server-Side Request Forgery in DokuWiki when media file fetching is enabled.

- **Severity:** High 8.6 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 31 Oct 2016
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2016-7964, GHSA-943p-qf6q-5m99, UBUNTU-CVE-2016-7964

## What is CVE-2016-7964?

CVE-2016-7964 is a high-severity server-side request forgery vulnerability in n/a, published on 31 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The sendRequest method in HTTPClient Class in file /inc/HTTPClient.php in DokuWiki 2016-06-26a and older, when media file fetching is enabled, has no way to restrict access to private networks. This allows users to scan ports of internal networks via SSRF, such as 10.0.0.1/8, 172.16.0.0/12, and 192.168.0.0/16.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2016-7964?

It affects 1 product.


Products: Dokuwiki Dokuwiki.

## How do I fix CVE-2016-7964?

Upgrade to a fixed version.

## Is CVE-2016-7964 being exploited?

There is no known exploitation of CVE-2016-7964 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-15474](https://insights.sbomify.com/CVE-2018-15474/): Code injection in n/a (critical 9.6)
- [CVE-2009-1960](https://insights.sbomify.com/CVE-2009-1960/): Code injection in n/a (critical 9.3)
- [CVE-2010-0288](https://insights.sbomify.com/CVE-2010-0288/): Missing authorization in n/a (high 7.5)
- [CVE-2019-25338](https://insights.sbomify.com/CVE-2019-25338/): Dokuwiki 2018-04-22b - Username Enumeration (medium 6.9)
- [CVE-2010-0289](https://insights.sbomify.com/CVE-2010-0289/): Cross-site request forgery in n/a (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7964 and fix it if it is affected.

What it is: CVE-2016-7964 is a high-severity server-side request forgery vulnerability in n/a, published on 31 Oct 2016. 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-2016-7964 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-2016-7964/ (Markdown: https://insights.sbomify.com/CVE-2016-7964/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7964
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7964
- OSV: https://osv.dev/vulnerability/CVE-2016-7964

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-7964/
Summaries are generated and may contain mistakes; the official description above is the record.