# CVE-2019-10782: XML external entity (XXE) processing ('external-parameter-entities' feature was not fully disabled))

> An XML External Entity vulnerability in Checkstyle allows attackers to read sensitive files or cause denial of service via crafted XML input.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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:** 30 Jan 2020
- **Updated:** 4 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-10782, DLA-2099-1, GHSA-763g-fqq7-48wg, SNYK-JAVA-COMPUPPYCRAWLTOOLS-543266, UBUNTU-CVE-2019-10782

## What is CVE-2019-10782?

CVE-2019-10782 is a medium-severity vulnerability in com.puppycrawl.tools:checkstyle, published on 30 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

All versions of com.puppycrawl.tools:checkstyle before 8.29 are vulnerable to XML External Entity (XXE) Injection due to an incomplete fix for CVE-2019-9658.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2019-10782?

2 open source packages ship an affected version, including com.puppycrawl.tools:checkstyle. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `com.puppycrawl.tools:checkstyle` | Maven | All versions | 8.29 |
| `com.puppycrawl.tools:checkstyle` | Maven | All versions | 8.29 |

Products: Checkstyle Checkstyle.

## How do I fix CVE-2019-10782?

Upgrade com.puppycrawl.tools:checkstyle to 8.29 or later.

## Is CVE-2019-10782 being exploited?

There is no known exploitation of CVE-2019-10782 in the wild and no public exploit code.

## Other vulnerabilities in com.puppycrawl.tools:checkstyle

- [CVE-2019-9658](https://insights.sbomify.com/CVE-2019-9658/): Moderate severity vulnerability that affects com.puppycrawl.tools:checkstyle (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10782 and fix it if it is affected.

What it is: CVE-2019-10782 is a medium-severity vulnerability in com.puppycrawl.tools:checkstyle, published on 30 Jan 2020. 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-2019-10782 in the wild and no public exploit code.

Affected packages and fixed versions:
- com.puppycrawl.tools:checkstyle (Maven): affected all versions; fixed in 8.29
- com.puppycrawl.tools:checkstyle (Maven): affected all versions; fixed in 8.29

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-2019-10782/ (Markdown: https://insights.sbomify.com/CVE-2019-10782/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10782
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10782
- OSV: https://osv.dev/vulnerability/CVE-2019-10782

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-10782/
Summaries are generated and may contain mistakes; the official description above is the record.