{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59868", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-07T15:41:53.607Z", "datePublished": "2026-07-08T15:18:19.422Z", "dateUpdated": "2026-07-08T15:18:19.422Z"}, "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": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "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:L", "version": "3.1"}}], "references": [{"name": "https://github.com/nodeca/js-yaml/security/advisories/GHSA-g796-fgmg-93mv", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/nodeca/js-yaml/security/advisories/GHSA-g796-fgmg-93mv"}, {"name": "https://github.com/nodeca/js-yaml/commit/3105455b81dee69e0fd36e09ac0b2ccfdb54adc1", "tags": ["x_refsource_MISC"], "url": "https://github.com/nodeca/js-yaml/commit/3105455b81dee69e0fd36e09ac0b2ccfdb54adc1"}, {"name": "https://github.com/nodeca/js-yaml/releases/tag/5.2.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/nodeca/js-yaml/releases/tag/5.2.0"}], "affected": [{"vendor": "nodeca", "product": "js-yaml", "versions": [{"version": ">= 5.0.0, < 5.2.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-08T15:18:19.422Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-g796-fgmg-93mv", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0,5.2.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "js-yaml", "source": "cna", "vendor": "nodeca"}, "product": "js-yaml", "vendor": "nodeca"}], "created": "2026-07-08T16:45:03.646894+00:00", "updated": "2026-07-08T16:45:03.646916+00:00", "vendors": ["nodeca", "nodeca$PRODUCT$js-yaml"]}