# CVE-2019-10172: Improper Restriction of XML External Entity Reference in jackson-mapper-asl

> An XML External Entity vulnerability in the Jackson mapper library allows attackers to read sensitive files or cause denial of service.

- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/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:** 18 Nov 2019
- **Updated:** 4 Aug 2024
- **Also known as:** CLSA-2025-1755561926, DEBIAN-CVE-2019-10172, GHSA-r6j9-8759-g62w, OESA-2021-1342, ROOT-APP-MAVEN-CVE-2019-10172, UBUNTU-CVE-2019-10172

## What is CVE-2019-10172?

CVE-2019-10172 is a medium-severity vulnerability in Debian Debian Linux, published on 18 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A flaw was found in org.codehaus.jackson:jackson-mapper-asl:1.9.x libraries. XML external entity vulnerabilities similar CVE-2016-3720 also affects codehaus jackson-mapper-asl libraries but in different classes.

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

## Which versions are affected by CVE-2019-10172?

2 open source packages ship an affected version, including org.codehaus.jackson:jackson-mapper-asl. It affects 5 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.codehaus.jackson:jackson-mapper-asl` | Maven | All versions to 1.9.13 | None |
| `org.codehaus.jackson:jackson-mapper-asl` | Maven | All versions to 1.9.13 | None |

Products: Apache Spark, Debian Debian Linux, Fasterxml Jackson-Mapper-Asl, Redhat Jboss Enterprise Application Platform, Redhat Jboss Fuse.

## How do I fix CVE-2019-10172?

Upgrade to a fixed version.

## Is CVE-2019-10172 being exploited?

There is no known exploitation of CVE-2019-10172 in the wild and no public exploit code.

Public exploit code:

- CVE-2019-10172 PoC and Possible mitigations (github_poc): https://github.com/rusakovichma/CVE-2019-10172

## Other vulnerabilities in Debian Debian Linux

- [CVE-2022-33891](https://insights.sbomify.com/CVE-2022-33891/): Apache Spark Command Injection (high 8.8, exploited in the wild)
- [CVE-2020-9480](https://insights.sbomify.com/CVE-2020-9480/): Improper Authentication in Apache Spark (critical 9.8)
- [CVE-2018-17190](https://insights.sbomify.com/CVE-2018-17190/): Remote Code Execution in spark-core (critical 9.8)
- [CVE-2019-20445](https://insights.sbomify.com/CVE-2019-20445/): HTTP Request Smuggling in Netty (critical 9.1)
- [CVE-2025-54920](https://insights.sbomify.com/CVE-2025-54920/): Apache Spark: Spark History Server Code Execution Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-10172 and fix it if it is affected.

What it is: CVE-2019-10172 is a medium-severity vulnerability in Debian Debian Linux, published on 18 Nov 2019. 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-2019-10172 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.codehaus.jackson:jackson-mapper-asl (Maven): affected all versions up to 1.9.13; no fix listed
- org.codehaus.jackson:jackson-mapper-asl (Maven): affected all versions up to 1.9.13; no fix listed

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-2019-10172/ (Markdown: https://insights.sbomify.com/CVE-2019-10172/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-10172
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-10172
- OSV: https://osv.dev/vulnerability/CVE-2019-10172

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-10172/
Summaries are generated and may contain mistakes; the official description above is the record.