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CVE-2026-59870Proof of concept (PoC) published · CISASuited to automated attack · CISA

js-yaml quadratic-complexity denial of service via YAML11_SCHEMA !!omap parsing

CVSS score

7.5

EPSS probability

%0.7

Risk score

0.1

Published

3 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline

Vulnerability Timeline (Change History)

CVE-2026-59870 historical changes made to the vulnerability by NVD, CISA and MITRE:

DateActor / SourceAction / DescriptionTypePrevious valueNew value
06.10.2026nvd@nist.govInitial Analysis & CVSS Vector AssignmentCVSS V3.1—CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
08.07.2026CISA CoordinatorSSVC Risk Re-assessmentSSVC / KEVexploitation: noneexploitation: none
08.07.2026MITRE / NVDNew CVE Record Received & IngestedCVE Created—CVE-2026-59870

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