{"schema_version":1,"title":"js-yaml (npm) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 13 vulnerabilities in js-yaml (npm): 0 in the last 7 days and 8 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-84375, was published on 1 September 2026.","url":"https://junglewise.ai/threats/technologies/js-yaml","json_url":"https://junglewise.ai/threats/technologies/js-yaml.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/js-yaml","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":4,"all_time":13,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":8,"last_365_days":10},"latest":[{"cve":"CVE-2026-84375","cvss":7.5,"epss":0.0053,"slug":"cve-2026-84375-js-yaml-denial-of-service-via-empty-merge-sources","title":"js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2 and 4.3.2, maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader","severity":"high","exploited":false,"published_at":"2026-09-01T22:17:19.44+00:00","url":"https://junglewise.ai/threats/cve-2026-84375-js-yaml-denial-of-service-via-empty-merge-sources"},{"cvss":7.5,"slug":"nodeca-js-yaml-quadratic-cpu-consumption-in-omap-resolution-9112c357","title":"nodeca js-yaml quadratic CPU consumption in !!omap resolution","severity":"high","exploited":false,"published_at":"2026-08-06T20:27:32+00:00","url":"https://junglewise.ai/threats/nodeca-js-yaml-quadratic-cpu-consumption-in-omap-resolution-9112c357"},{"cvss":3.1,"slug":"js-yaml-quadratic-cpu-consumption-in-omap-resolution-f21ac1bd","title":"JS-YAML quadratic CPU consumption in !!omap resolution","severity":"low","exploited":false,"published_at":"2026-08-06T20:27:32+00:00","url":"https://junglewise.ai/threats/js-yaml-quadratic-cpu-consumption-in-omap-resolution-f21ac1bd"},{"cvss":7.5,"slug":"nodeca-js-yaml-denial-of-service-in-flow-collections-14398246","title":"nodeca js-yaml denial of service in flow collections","severity":"high","exploited":false,"published_at":"2026-07-24T16:47:36+00:00","url":"https://junglewise.ai/threats/nodeca-js-yaml-denial-of-service-in-flow-collections-14398246"},{"cve":"CVE-2026-73643","cvss":3.1,"epss":0.0049,"slug":"cve-2026-73643-js-yaml-exponential-parsing-time-in-flow-collections-denial-of","title":"js-yaml exponential parsing time in flow collections denial of service","severity":"low","exploited":false,"published_at":"2026-07-24T16:47:36+00:00","url":"https://junglewise.ai/threats/cve-2026-73643-js-yaml-exponential-parsing-time-in-flow-collections-denial-of"},{"cve":"CVE-2026-59870","cvss":5.3,"epss":0.0064,"slug":"cve-2026-59870-nodeca-js-yaml-denial-of-service-in-yaml11-schema-omap-parsing","title":"nodeca js-yaml denial of service in YAML11_SCHEMA omap parsing","severity":"medium","exploited":false,"published_at":"2026-07-08T16:16:33.58+00:00","url":"https://junglewise.ai/threats/cve-2026-59870-nodeca-js-yaml-denial-of-service-in-yaml11-schema-omap-parsing"},{"cve":"CVE-2026-59869","cvss":7.5,"epss":0.0059,"slug":"cve-2026-59869-nodeca-js-yaml-denial-of-service-via-merge-key-chains","title":"nodeca js-yaml denial of service via merge key chains","severity":"high","exploited":false,"published_at":"2026-07-08T16:16:33.423+00:00","url":"https://junglewise.ai/threats/cve-2026-59869-nodeca-js-yaml-denial-of-service-via-merge-key-chains"},{"cve":"CVE-2026-59868","cvss":5.3,"epss":0.0064,"slug":"cve-2026-59868-js-yaml-denial-of-service-via-quadratic-cpu-consumption-in-merge","title":"js-yaml denial of service via quadratic CPU consumption in merge keys","severity":"medium","exploited":false,"published_at":"2026-07-08T16:16:33.27+00:00","url":"https://junglewise.ai/threats/cve-2026-59868-js-yaml-denial-of-service-via-quadratic-cpu-consumption-in-merge"},{"cve":"CVE-2026-53550","cvss":5.3,"epss":0.0042,"slug":"cve-2026-53550-nodeca-js-yaml-denial-of-service-in-merge-key-handling","title":"nodeca js-yaml denial of service in merge key handling","severity":"medium","exploited":false,"published_at":"2026-06-22T16:16:38.447+00:00","url":"https://junglewise.ai/threats/cve-2026-53550-nodeca-js-yaml-denial-of-service-in-merge-key-handling"},{"cve":"CVE-2025-64718","cvss":3.1,"epss":0.0041,"slug":"cve-2025-64718-js-yaml-prototype-pollution-in-merge-operator","title":"js-yaml prototype pollution in merge operator","severity":"low","exploited":false,"published_at":"2025-11-14T14:29:48+00:00","url":"https://junglewise.ai/threats/cve-2025-64718-js-yaml-prototype-pollution-in-merge-operator"},{"cvss":3.1,"slug":"nodeca-js-yaml-denial-of-service-via-complex-map-keys-ebc6e7f3","title":"nodeca js-yaml Denial of Service via complex map keys","severity":"low","exploited":false,"published_at":"2019-06-05T14:35:29+00:00","url":"https://junglewise.ai/threats/nodeca-js-yaml-denial-of-service-via-complex-map-keys-ebc6e7f3"},{"cvss":7.5,"slug":"js-yaml-code-injection-in-load-function-f33c238d","title":"js-yaml code injection in load() function","severity":"info","exploited":false,"published_at":"2019-06-04T20:14:07+00:00","url":"https://junglewise.ai/threats/js-yaml-code-injection-in-load-function-f33c238d"},{"cve":"CVE-2013-4660","epss":0.1732,"slug":"cve-2013-4660-js-yaml-deserialization-code-execution","title":"js-yaml deserialization code execution","severity":"info","exploited":false,"published_at":"2017-10-24T18:33:37+00:00","url":"https://junglewise.ai/threats/cve-2013-4660-js-yaml-deserialization-code-execution"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":3},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"flowise (npm)","slug":"flowise","vulnerabilities":156,"url":"https://junglewise.ai/threats/technologies/flowise"},{"name":"vm2 (npm)","slug":"vm2","vulnerabilities":82,"url":"https://junglewise.ai/threats/technologies/vm2"},{"name":"@budibase/server (npm)","slug":"budibase-server","vulnerabilities":61,"url":"https://junglewise.ai/threats/technologies/budibase-server"},{"name":"directus (npm)","slug":"directus","vulnerabilities":60,"url":"https://junglewise.ai/threats/technologies/directus"},{"name":"nocodb (npm)","slug":"nocodb","vulnerabilities":55,"url":"https://junglewise.ai/threats/technologies/nocodb"},{"name":"hono (npm)","slug":"hono","vulnerabilities":54,"url":"https://junglewise.ai/threats/technologies/hono"},{"name":"parse-server (npm)","slug":"parse-server","vulnerabilities":42,"url":"https://junglewise.ai/threats/technologies/parse-server"},{"name":"dompurify (npm)","slug":"dompurify","vulnerabilities":39,"url":"https://junglewise.ai/threats/technologies/dompurify"},{"name":"ghost (npm)","slug":"ghost","vulnerabilities":39,"url":"https://junglewise.ai/threats/technologies/ghost"},{"name":"flowise-components (npm)","slug":"flowise-components","vulnerabilities":35,"url":"https://junglewise.ai/threats/technologies/flowise-components"},{"name":"astro (npm)","slug":"astro","vulnerabilities":30,"url":"https://junglewise.ai/threats/technologies/astro"},{"name":"@anthropic-ai/claude-code (npm)","slug":"anthropic-ai-claude-code","vulnerabilities":28,"url":"https://junglewise.ai/threats/technologies/anthropic-ai-claude-code"}],"technology":{"hub":true,"name":"js-yaml (npm)","slug":"js-yaml","vendor":{"name":"npm","slug":"npm","url":"https://junglewise.ai/threats/vendors/npm"},"aliases":[],"homepage":"https://nodeca.github.io/js-yaml/","repo_url":"https://github.com/nodeca/js-yaml","description":"A JavaScript implementation of YAML for parsing and dumping data.","url":"https://junglewise.ai/threats/technologies/js-yaml"},"most_severe":[{"cve":"CVE-2026-59869","cvss":7.5,"epss":0.0059,"slug":"cve-2026-59869-nodeca-js-yaml-denial-of-service-via-merge-key-chains","title":"nodeca js-yaml denial of service via merge key chains","severity":"high","exploited":false,"published_at":"2026-07-08T16:16:33.423+00:00","url":"https://junglewise.ai/threats/cve-2026-59869-nodeca-js-yaml-denial-of-service-via-merge-key-chains"},{"cve":"CVE-2026-84375","cvss":7.5,"epss":0.0053,"slug":"cve-2026-84375-js-yaml-denial-of-service-via-empty-merge-sources","title":"js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2 and 4.3.2, maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader","severity":"high","exploited":false,"published_at":"2026-09-01T22:17:19.44+00:00","url":"https://junglewise.ai/threats/cve-2026-84375-js-yaml-denial-of-service-via-empty-merge-sources"},{"cvss":7.5,"slug":"nodeca-js-yaml-quadratic-cpu-consumption-in-omap-resolution-9112c357","title":"nodeca js-yaml quadratic CPU consumption in !!omap resolution","severity":"high","exploited":false,"published_at":"2026-08-06T20:27:32+00:00","url":"https://junglewise.ai/threats/nodeca-js-yaml-quadratic-cpu-consumption-in-omap-resolution-9112c357"},{"cvss":7.5,"slug":"nodeca-js-yaml-denial-of-service-in-flow-collections-14398246","title":"nodeca js-yaml denial of service in flow collections","severity":"high","exploited":false,"published_at":"2026-07-24T16:47:36+00:00","url":"https://junglewise.ai/threats/nodeca-js-yaml-denial-of-service-in-flow-collections-14398246"},{"cve":"CVE-2026-59870","cvss":5.3,"epss":0.0064,"slug":"cve-2026-59870-nodeca-js-yaml-denial-of-service-in-yaml11-schema-omap-parsing","title":"nodeca js-yaml denial of service in YAML11_SCHEMA omap parsing","severity":"medium","exploited":false,"published_at":"2026-07-08T16:16:33.58+00:00","url":"https://junglewise.ai/threats/cve-2026-59870-nodeca-js-yaml-denial-of-service-in-yaml11-schema-omap-parsing"},{"cve":"CVE-2026-59868","cvss":5.3,"epss":0.0064,"slug":"cve-2026-59868-js-yaml-denial-of-service-via-quadratic-cpu-consumption-in-merge","title":"js-yaml denial of service via quadratic CPU consumption in merge keys","severity":"medium","exploited":false,"published_at":"2026-07-08T16:16:33.27+00:00","url":"https://junglewise.ai/threats/cve-2026-59868-js-yaml-denial-of-service-via-quadratic-cpu-consumption-in-merge"},{"cve":"CVE-2026-53550","cvss":5.3,"epss":0.0042,"slug":"cve-2026-53550-nodeca-js-yaml-denial-of-service-in-merge-key-handling","title":"nodeca js-yaml denial of service in merge key handling","severity":"medium","exploited":false,"published_at":"2026-06-22T16:16:38.447+00:00","url":"https://junglewise.ai/threats/cve-2026-53550-nodeca-js-yaml-denial-of-service-in-merge-key-handling"},{"cve":"CVE-2026-73643","cvss":3.1,"epss":0.0049,"slug":"cve-2026-73643-js-yaml-exponential-parsing-time-in-flow-collections-denial-of","title":"js-yaml exponential parsing time in flow collections denial of service","severity":"low","exploited":false,"published_at":"2026-07-24T16:47:36+00:00","url":"https://junglewise.ai/threats/cve-2026-73643-js-yaml-exponential-parsing-time-in-flow-collections-denial-of"},{"cve":"CVE-2025-64718","cvss":3.1,"epss":0.0041,"slug":"cve-2025-64718-js-yaml-prototype-pollution-in-merge-operator","title":"js-yaml prototype pollution in merge operator","severity":"low","exploited":false,"published_at":"2025-11-14T14:29:48+00:00","url":"https://junglewise.ai/threats/cve-2025-64718-js-yaml-prototype-pollution-in-merge-operator"},{"cvss":3.1,"slug":"js-yaml-quadratic-cpu-consumption-in-omap-resolution-f21ac1bd","title":"JS-YAML quadratic CPU consumption in !!omap resolution","severity":"low","exploited":false,"published_at":"2026-08-06T20:27:32+00:00","url":"https://junglewise.ai/threats/js-yaml-quadratic-cpu-consumption-in-omap-resolution-f21ac1bd"}],"generated_at":"2026-09-26T10:14:00.201383+00:00"}