# CVE-2022-38749: libyaml-snake-java: Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS)

CVE-2022-38749 is fixed in 2 products on 1 platform, first by libyaml-snake-java 1.23-1+deb10u1build0.18.04.1, released September 5, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-38749
- Priority: Routine
- CVSS: 6.5 (Medium)
- EPSS: 0.0220
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 5, 2022

## Description

Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stackoverflow.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libyaml-snake-java Ubuntu 18.04.6 LTS (bionic) | 1.23-1+deb10u1build0.18.04.1 | [libyaml-snake-java 1.23-1+deb10u1build0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libyaml-snake-java-1.23-1-deb10u1build0.18.04.1.md) | Sep 5, 2022 |
| Linux | libyaml-snake-java Ubuntu 20.04 LTS (focal) | 1.25+ds-2ubuntu0.1 | [libyaml-snake-java 1.25+ds-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libyaml-snake-java-1.25-ds-2ubuntu0.1.md) | Sep 5, 2022 |
| Linux | libyaml-snake-java Ubuntu 22.04.1 LTS (jammy) | 1.29-1ubuntu0.22.04.1 | [libyaml-snake-java 1.29-1ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libyaml-snake-java-1.29-1ubuntu0.22.04.1.md) | Sep 5, 2022 |
| Linux | snakeyaml Debian 12.15 (bookworm) | 1.31-1 | [DEBIAN-CVE-2022-38749](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38749.md) | Sep 5, 2022 |
| Linux | snakeyaml Debian 13.5 (trixie) | 1.31-1 | [DEBIAN-CVE-2022-38749](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38749.md) | Sep 5, 2022 |
| Linux | snakeyaml Debian 14 | 1.31-1 | [DEBIAN-CVE-2022-38749](https://patchblox.com/security/data/fix/linux/debian-cve-2022-38749.md) | Sep 5, 2022 |

---

Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.