# GHSA-4j9x-g4x8-vcmf: ZendFramework potential XML eXternal Entity injection vectors

> Attackers can exploit XXE vulnerabilities in Zend Framework feed parsers to read arbitrary files or initiate TCP connections via malicious XML feeds.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Jun 2024

## What is GHSA-4j9x-g4x8-vcmf?

GHSA-4j9x-g4x8-vcmf is a vulnerability in zendframework/zendframework1, published on 7 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

`Zend_Feed_Rss` and `Zend_Feed_Atom` were found to contain potential XML eXternal Entity (XXE) vectors due to insecure usage of PHP's DOM extension. External entities could be specified by adding a specific DOCTYPE element to feeds; exploiting this vulnerability could coerce opening arbitrary files and/or TCP connections.

A similar issue was fixed for 1.11.13 and 1.12.0, in the `Zend_Feed::import()` factory method; however, the reporter of the issue discovered that the individual classes contained similar functionality in their constructors which remained vulnerable.

## Which versions are affected by GHSA-4j9x-g4x8-vcmf?

4 open source packages ship an affected version, including zendframework/zendframework1.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `zendframework/zendframework1` | Packagist | From 1.11.0 | 1.11.15 |
| `zendframework/zendframework1` | Packagist | From 1.11.0 | 1.11.15 |
| `zendframework/zendframework1` | Packagist | From 1.12.0 | 1.12.1 |
| `zendframework/zendframework1` | Packagist | From 1.12.0 | 1.12.1 |

## How do I fix GHSA-4j9x-g4x8-vcmf?

Upgrade zendframework/zendframework1 to a fixed version for your release line: 1.11.15 or 1.12.1.

## Is GHSA-4j9x-g4x8-vcmf being exploited?

There is no known exploitation of GHSA-4j9x-g4x8-vcmf in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-4j9x-g4x8-vcmf and fix it if it is affected.

What it is: GHSA-4j9x-g4x8-vcmf is a vulnerability in zendframework/zendframework1, published on 7 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-4j9x-g4x8-vcmf in the wild and no public exploit code.

Affected packages and fixed versions:
- zendframework/zendframework1 (Packagist): affected from 1.11.0; fixed in 1.11.15
- zendframework/zendframework1 (Packagist): affected from 1.11.0; fixed in 1.11.15
- zendframework/zendframework1 (Packagist): affected from 1.12.0; fixed in 1.12.1
- zendframework/zendframework1 (Packagist): affected from 1.12.0; fixed in 1.12.1

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/GHSA-4j9x-g4x8-vcmf/ (Markdown: https://insights.sbomify.com/GHSA-4j9x-g4x8-vcmf/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-4j9x-g4x8-vcmf

---
From sbomify Insights: https://insights.sbomify.com/GHSA-4j9x-g4x8-vcmf/
Summaries are generated and may contain mistakes; the official description above is the record.