Description
An issue was discovered in Esoteric YamlBeans through 1.15. A crafted YAML document is able perform am XML Entity Expansion attack against YamlBeans YamlReader. By exploiting the Anchor feature in YAML, it is possible to generate a small YAML document that, when read, is expanded to a large size, causing CPU and memory consumption, such as a Java Out-of-Memory exception.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://contrastsecurity.comThird Party Advisory
- https://github.com/Contrast-Security-OSS/yamlbeans/blob/main/SECURITY.mdExploit, Third Party Advisory
- https://github.com/EsotericSoftwareThird Party Advisory
- https://contrastsecurity.comThird Party Advisory
- https://github.com/Contrast-Security-OSS/yamlbeans/blob/main/SECURITY.mdExploit, Third Party Advisory
- https://github.com/EsotericSoftwareThird Party Advisory
Timeline
- Published
- Aug 25, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified