CVE-2026-59868 - js-yaml: YAML merge-key chains can force quadratic CPU consumption

CVE-2026-59868 - js-yaml: YAML merge-key chains can force quadratic CPU consumption

https://cvefeed.io/rssfeed/latest.atom / Wed, 07/08/2026 - 19:04
CVE ID :CVE-2026-59868
Published : July 8, 2026, 4:16 p.m. | 29 minutes ago
Description :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.
Severity: 5.3 | MEDIUM
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