Vulnerability Database · npm · js-yaml · Version
js-yaml 3.8.4
3.8.4 is affected by 5 vulnerabilities.
The vulnerabilities that cover this exact version are listed below with the fixed version to move to.
Critical 0 High 2 Medium 3 Low 0 Unrated 0
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Released 08 May 2017
Licence MIT
Also known from other sources 7
Newer releases 93
Database updated 23/Oct/2026
Release and licence data published by the npm registry. Licence information is not legal advice.
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01 Vulnerabilities affecting this version
js-yaml 3.8.4 vulnerabilities
5 vulnerabilities cover js-yaml 3.8.4. Open the full list in the database.
| Vulnerability | Severity | Fixed version | Disclosed |
|---|---|---|---|
| CVE-2026-59869: js-yaml YAML Merge-Key Chains Cause Quadratic CPU Consumption | 7.5 high | 3.15.0 | 20 Jul 2026 |
| Denial of Service in js-yaml | 5.9 medium | 3.13.0 | 05 Jun 2019 |
| CVE-2026-53550: js-yaml Denial of Service Vulnerability Due to Quadratic Complexity in Merge Key Handling | 5.3 medium | 4.2.0 | 15 Jun 2026 |
| CVE-2025-64718: js-yaml Prototype Pollution Vulnerability | 5.3 medium | 4.1.1 | 14 Nov 2025 |
| Code Injection in js-yaml | N/A high | 3.13.1 | 04 Jun 2019 |
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Questions
About js-yaml 3.8.4
Is js-yaml 3.8.4 vulnerable?
Yes. 5 vulnerabilities in the Vulert database cover js-yaml 3.8.4: 0 critical, 2 high, 3 medium and 0 low. Each entry above names the fixed version to move to.
Is 3.8.4 the latest release of js-yaml?
No. 3.8.4 was published 08 May 2017, and newer releases exist. Newer is not automatically safer — the version table on the package page shows what each release carries.
How do I monitor js-yaml for upcoming vulnerabilities?
Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the js-yaml version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.