# CVE-2016-7051: jackson-dataformat-xml vulnerable to server side request forgery (SSRF)

> Remote attackers can perform server-side request forgery attacks via DTD vectors in the Jackson XML dataformat component.

- **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/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:** Yes
- **Published:** 14 Apr 2017
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2016-7051, GHSA-7c2r-3jqf-c9rw, UBUNTU-CVE-2016-7051

## What is CVE-2016-7051?

CVE-2016-7051 is a high-severity server-side request forgery vulnerability in n/a, published on 14 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

XmlMapper in the Jackson XML dataformat component (aka jackson-dataformat-xml) before 2.7.8 and 2.8.x before 2.8.4 allows remote attackers to conduct server-side request forgery (SSRF) attacks via vectors related to a DTD.

Weakness: CWE-918 (Server-Side Request Forgery), CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2016-7051?

4 open source packages ship an affected version, including com.fasterxml.jackson.dataformat:jackson-dataformat-xml. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `com.fasterxml.jackson.dataformat:jackson-dataformat-xml` | Maven | All versions | 2.7.8 |
| `com.fasterxml.jackson.dataformat:jackson-dataformat-xml` | Maven | All versions | 2.7.8 |
| `com.fasterxml.jackson.dataformat:jackson-dataformat-xml` | Maven | From 2.8.0 | 2.8.4 |
| `com.fasterxml.jackson.dataformat:jackson-dataformat-xml` | Maven | From 2.8.0 | 2.8.4 |

Products: Fasterxml Jackson-Dataformat-Xml.

## How do I fix CVE-2016-7051?

Upgrade com.fasterxml.jackson.dataformat:jackson-dataformat-xml to a fixed version for your release line: 2.7.8 or 2.8.4.

## Is CVE-2016-7051 being exploited?

There is no known exploitation of CVE-2016-7051 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2016-3720](https://insights.sbomify.com/CVE-2016-3720/): jackson-dataformat-xml vulnerable to XML external entity (XXE) (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7051 and fix it if it is affected.

What it is: CVE-2016-7051 is a high-severity server-side request forgery vulnerability in n/a, published on 14 Apr 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-2016-7051 in the wild and no public exploit code.

Affected packages and fixed versions:
- com.fasterxml.jackson.dataformat:jackson-dataformat-xml (Maven): affected all versions; fixed in 2.7.8
- com.fasterxml.jackson.dataformat:jackson-dataformat-xml (Maven): affected all versions; fixed in 2.7.8
- com.fasterxml.jackson.dataformat:jackson-dataformat-xml (Maven): affected from 2.8.0; fixed in 2.8.4
- com.fasterxml.jackson.dataformat:jackson-dataformat-xml (Maven): affected from 2.8.0; fixed in 2.8.4

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-2016-7051/ (Markdown: https://insights.sbomify.com/CVE-2016-7051/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7051
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7051
- OSV: https://osv.dev/vulnerability/CVE-2016-7051

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-7051/
Summaries are generated and may contain mistakes; the official description above is the record.