{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59869", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-07T15:41:53.607Z", "datePublished": "2026-07-08T15:15:54.675Z", "dateUpdated": "2026-07-08T15:15:54.675Z"}, "containers": {"cna": {"title": "js-yaml: YAML merge-key chains can force quadratic CPU consumption", "problemTypes": [{"descriptions": [{"cweId": "CWE-407", "lang": "en", "description": "CWE-407: Inefficient Algorithmic Complexity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m"}, {"name": "https://github.com/nodeca/js-yaml/commit/24f13e79ee1343a7e30bd6f6c9d9cdbf0ac9b2b7", "tags": ["x_refsource_MISC"], "url": "https://github.com/nodeca/js-yaml/commit/24f13e79ee1343a7e30bd6f6c9d9cdbf0ac9b2b7"}, {"name": "https://github.com/nodeca/js-yaml/commit/59423c6f8cdc78742ac00e25a4dd39ef16b702e4", "tags": ["x_refsource_MISC"], "url": "https://github.com/nodeca/js-yaml/commit/59423c6f8cdc78742ac00e25a4dd39ef16b702e4"}, {"name": "https://github.com/nodeca/js-yaml/releases/tag/3.15.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/nodeca/js-yaml/releases/tag/3.15.0"}, {"name": "https://github.com/nodeca/js-yaml/releases/tag/4.3.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/nodeca/js-yaml/releases/tag/4.3.0"}], "affected": [{"vendor": "nodeca", "product": "js-yaml", "versions": [{"version": ">= 3.0.0, < 3.15.0", "status": "affected"}, {"version": ">= 4.0.0, < 4.3.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-08T15:15:54.675Z"}, "descriptions": [{"lang": "en", "value": "js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, 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 versions 3.15.0 and 4.3.0."}], "source": {"advisory": "GHSA-52cp-r559-cp3m", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{}