CVE-2026-59869

{"id": "CVE-2026-59869", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59869", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-09T15:14:16.302841Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "nodeca", "product": "js-yaml", "versions": [{"status": "affected", "version": ">= 3.0.0, < 3.15.0"}, {"status": "affected", "version": ">= 4.0.0, < 4.3.0"}]}]}], "published": "2026-07-08T16:16:33.423", "references": [{"url": "https://github.com/nodeca/js-yaml/commit/24f13e79ee1343a7e30bd6f6c9d9cdbf0ac9b2b7", "source": "security-advisories@github.com"}, {"url": "https://github.com/nodeca/js-yaml/commit/59423c6f8cdc78742ac00e25a4dd39ef16b702e4", "source": "security-advisories@github.com"}, {"url": "https://github.com/nodeca/js-yaml/releases/tag/3.15.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/nodeca/js-yaml/releases/tag/4.3.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m", "source": "security-advisories@github.com"}, {"url": "https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-407"}]}], "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."}], "lastModified": "2026-07-09T16:16:47.917", "sourceIdentifier": "security-advisories@github.com"}