Technology · npm
js-yaml (npm) vulnerabilities
Updated . Rebuilt every hour.
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.
- Last 7 days
- 0
- Last 90 days
- 8
- Critical, all time
- 0
- Exploited in the wild
- 0
About js-yaml (npm)
A JavaScript implementation of YAML for parsing and dumping data.
Latest js-yaml (npm) vulnerabilities
- CVE-2026-84375: js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2 and 4.3.2, maxTotalMergeKeys in…highCVSS 7.5EPSS 0.5%
- nodeca js-yaml quadratic CPU consumption in !!omap resolutionhighCVSS 7.5
- JS-YAML quadratic CPU consumption in !!omap resolutionlowCVSS 3.1
- nodeca js-yaml denial of service in flow collectionshighCVSS 7.5
- CVE-2026-73643: js-yaml exponential parsing time in flow collections denial of servicelowCVSS 3.1EPSS 0.5%
- CVE-2026-59870: nodeca js-yaml denial of service in YAML11_SCHEMA omap parsingmediumCVSS 5.3EPSS 0.6%
- CVE-2026-59869: nodeca js-yaml denial of service via merge key chainshighCVSS 7.5EPSS 0.6%
- CVE-2026-59868: js-yaml denial of service via quadratic CPU consumption in merge keysmediumCVSS 5.3EPSS 0.6%
- CVE-2026-53550: nodeca js-yaml denial of service in merge key handlingmediumCVSS 5.3EPSS 0.4%
- CVE-2025-64718: js-yaml prototype pollution in merge operatorlowCVSS 3.1EPSS 0.4%
- nodeca js-yaml Denial of Service via complex map keyslowCVSS 3.1
- js-yaml code injection in load() functioninfoCVSS 7.5
- CVE-2013-4660: js-yaml deserialization code executioninfoEPSS 17.3%
Most severe js-yaml (npm) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-59869: nodeca js-yaml denial of service via merge key chainshighCVSS 7.5EPSS 0.6%
- CVE-2026-84375: js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2 and 4.3.2, maxTotalMergeKeys in…highCVSS 7.5EPSS 0.5%
- nodeca js-yaml quadratic CPU consumption in !!omap resolutionhighCVSS 7.5
- nodeca js-yaml denial of service in flow collectionshighCVSS 7.5
- CVE-2026-59870: nodeca js-yaml denial of service in YAML11_SCHEMA omap parsingmediumCVSS 5.3EPSS 0.6%
- CVE-2026-59868: js-yaml denial of service via quadratic CPU consumption in merge keysmediumCVSS 5.3EPSS 0.6%
- CVE-2026-53550: nodeca js-yaml denial of service in merge key handlingmediumCVSS 5.3EPSS 0.4%
- CVE-2026-73643: js-yaml exponential parsing time in flow collections denial of servicelowCVSS 3.1EPSS 0.5%
- CVE-2025-64718: js-yaml prototype pollution in merge operatorlowCVSS 3.1EPSS 0.4%
- JS-YAML quadratic CPU consumption in !!omap resolutionlowCVSS 3.1
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 3 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 2 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 2 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 1 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/js-yaml.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "js-yaml (npm) vulnerabilities", https://junglewise.ai/threats/technologies/js-yaml, 26 September 2026.