# Nodeca Js-Yaml vulnerabilities

Source: https://junglewise.ai/threats/technologies/nodeca-js-yaml  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/nodeca-js-yaml.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Nodeca Js-Yaml: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, js-yaml CPU exhaustion via merge keys with empty mappings, was published on 29 September 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 2
- All time: 5 (0 critical, 0 exploited in the wild)

## About Nodeca Js-Yaml

JavaScript YAML parser and serializer.

## Latest Nodeca Js-Yaml vulnerabilities

- [js-yaml CPU exhaustion via merge keys with empty mappings](https://junglewise.ai/threats/js-yaml-maxtotalmergekeys-does-not-limit-cpu-use-for-empty-merge-e18172a3) (medium, CVSS 5.3, published 29 Sep 2026)
- [CVE-2026-84375: js-yaml YAML merge CPU consumption DoS](https://junglewise.ai/threats/cve-2026-84375-js-yaml-denial-of-service-via-empty-merge-sources) (high, CVSS 7.5, published 1 Sep 2026)
- [CVE-2026-59869: nodeca js-yaml denial of service via merge key chains](https://junglewise.ai/threats/cve-2026-59869-nodeca-js-yaml-denial-of-service-via-merge-key-chains) (high, CVSS 7.5, published 8 Jul 2026)
- [CVE-2026-53550: nodeca js-yaml denial of service in merge key handling](https://junglewise.ai/threats/cve-2026-53550-nodeca-js-yaml-denial-of-service-in-merge-key-handling) (medium, CVSS 5.3, published 22 Jun 2026)
- [CVE-2025-64718: js-yaml prototype pollution in merge operator](https://junglewise.ai/threats/cve-2025-64718-js-yaml-prototype-pollution-in-merge-operator) (medium, CVSS 5.3, published 13 Nov 2025)

## Most severe Nodeca Js-Yaml vulnerabilities

- [CVE-2026-59869: nodeca js-yaml denial of service via merge key chains](https://junglewise.ai/threats/cve-2026-59869-nodeca-js-yaml-denial-of-service-via-merge-key-chains) (high, CVSS 7.5, published 8 Jul 2026)
- [CVE-2026-84375: js-yaml YAML merge CPU consumption DoS](https://junglewise.ai/threats/cve-2026-84375-js-yaml-denial-of-service-via-empty-merge-sources) (high, CVSS 7.5, published 1 Sep 2026)
- [CVE-2026-53550: nodeca js-yaml denial of service in merge key handling](https://junglewise.ai/threats/cve-2026-53550-nodeca-js-yaml-denial-of-service-in-merge-key-handling) (medium, CVSS 5.3, published 22 Jun 2026)
- [CVE-2025-64718: js-yaml prototype pollution in merge operator](https://junglewise.ai/threats/cve-2025-64718-js-yaml-prototype-pollution-in-merge-operator) (medium, CVSS 5.3, published 13 Nov 2025)
- [js-yaml CPU exhaustion via merge keys with empty mappings](https://junglewise.ai/threats/js-yaml-maxtotalmergekeys-does-not-limit-cpu-use-for-empty-merge-e18172a3) (medium, CVSS 5.3, published 29 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 1 vulnerability in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 1 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 1 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Nodeca Js-Yaml vulnerabilities", https://junglewise.ai/threats/technologies/nodeca-js-yaml, 9 November 2026.