js-yaml is a JavaScript YAML parser and dumper. From 5.0.0 before 5.2.0, when merge keys are enabled, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in version 5.2.0.
| Vendor | Product | Versions |
|---|---|---|
| nodeca | js-yaml | >= 5.0.0, < 5.2.0 |
Updated affected versions to include up to 5.1.x, changed severity to HIGH, and marked the vulnerability as actively exploited.
Initial creation
