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js-yaml
npm
latest
5.5.0
· 2026-10-15
www.npmjs.com · all 93 versions
Security advisories
5
js-yaml: js-yaml: maxTotalMergeKeys does not limit CPU use for empty merge sources
fixed in 4.3.2, 3.15.2
js-yaml: js-yaml: YAML merge-key chains can force quadratic CPU consumption
fixed in 3.15.0, 4.3.0
js-yaml: JS-YAML: Quadratic CPU consumption in !!omap resolution (3.x and 4.x) — CVE-2026-59870 fix not backported
fixed in 4.3.1, 3.15.1
js-yaml: JS-YAML: Quadratic-complexity DoS in merge key handling via repeated aliases
fixed in 4.2.0, 3.15.0
js-yaml: js-yaml has prototype pollution in merge (<<)
fixed in 4.1.1, 3.14.2
Versions that change something
3.14.2
2025-11
fixes 1 advisory
3.15.0
2026-06
fixes 2 advisories
3.15.1
2026-07
fixes 1 advisory
3.15.2
2026-08
fixes 1 advisory
4.1.1
2025-11
fixes 1 advisory
4.2.0
2026-05
fixes 1 advisory
4.3.0
2026-06
fixes 1 advisory
4.3.1
2026-07
fixes 1 advisory
4.3.2
2026-08
fixes 1 advisory