# CVE-2016-7998: Code injection in n/a

> Authenticated attackers can execute arbitrary PHP code in SPIP by uploading a crafted HTML file and triggering a specific action.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/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:** Yes
- **Published:** 18 Jan 2017
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2016-7998, GHSA-q539-39f7-xr44, UBUNTU-CVE-2016-7998

## What is CVE-2016-7998?

CVE-2016-7998 is a high-severity code injection vulnerability in Spip Spip, published on 18 Jan 2017. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The SPIP template composer/compiler in SPIP 3.1.2 and earlier allows remote authenticated users to execute arbitrary PHP code by uploading an HTML file with a crafted (1) INCLUDE or (2) INCLURE tag and then accessing it with a valider_xml action.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2016-7998?

It affects 1 product.


Products: Spip Spip.

## How do I fix CVE-2016-7998?

Upgrade to a fixed version.

## Is CVE-2016-7998 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-7998 exists.

Public exploit code:

- SPIP 3.1.2 Template Compiler/Composer - PHP Code Execution (exploitdb)

## Other vulnerabilities in Spip Spip

- [CVE-2012-4331](https://insights.sbomify.com/CVE-2012-4331/): Other in n/a (critical 10.0)
- [CVE-2008-5812](https://insights.sbomify.com/CVE-2008-5812/): Other in n/a (critical 10.0)
- [CVE-2024-8517](https://insights.sbomify.com/CVE-2024-8517/): SPIP Bigup Multipart File Upload OS Command Injection (critical 9.8)
- [CVE-2023-24258](https://insights.sbomify.com/CVE-2023-24258/): SQL injection in n/a (critical 9.8)
- [CVE-2017-9736](https://insights.sbomify.com/CVE-2017-9736/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7998 and fix it if it is affected.

What it is: CVE-2016-7998 is a high-severity code injection vulnerability in Spip Spip, published on 18 Jan 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-7998 exists.

Affected product: Spip Spip. 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-2016-7998/ (Markdown: https://insights.sbomify.com/CVE-2016-7998/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7998
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7998
- OSV: https://osv.dev/vulnerability/CVE-2016-7998

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-7998/
Summaries are generated and may contain mistakes; the official description above is the record.