CVE-2026-59868
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| nodeca | js-yaml | >= 5.0.0, < 5.2.0 | affected |
Weaknesses
- CWE-407: CWE-407: Inefficient Algorithmic Complexity
References
- https://github.com/nodeca/js-yaml/security/advisories/GHSA-g796-fgmg-93mv
- https://github.com/nodeca/js-yaml/commit/3105455b81dee69e0fd36e09ac0b2ccfdb54adc1
- https://github.com/nodeca/js-yaml/releases/tag/5.2.0
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