PT-2026-84523
CVE-2026-84375
·
تاريخ النشر
2026-09-01
·
تاريخ التحديث
2026-10-23
الوصف من
CVSS 3.1
9.8
حرجةالمقاييسAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
js-yaml versions 3.0.0 through 3.15.1
js-yaml versions prior to 4.3.2
Description
An issue exists where
maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader.js fails to count empty mapping sources when processing the merge key <<. This allows an attacker to alias a large sequence of empty mappings into numerous merge targets, resulting in O(N * K) processing time. Because the resource limit remains unchanged, a small YAML document can lead to prolonged CPU consumption in applications that parse untrusted YAML, as merge processing is enabled by default.Recommendations
Update js-yaml to version 3.15.2.
Update js-yaml to version 4.3.2.
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