CVE-2025-64718

CVE-2025-64718 affects js-yaml, allowing prototype pollution via proto when parsing untrusted YAML. The issue is patched in js-yaml 4.1.1 and in 3.14.2. Public IBM bulletins confirm usage of vulnerable js-yaml versions in IBM Maximo components and recommend upgrading to a fixed release (e.g., js-...

CVE-2026-59869

js-yaml (JavaScript YAML parser) is affected by a resource-consumption issue in merge-key chains that can cause quadratic CPU time as documents grow linearly. Affected versions are 3.0.0–3.14.x and 4.0.0–4.2.x; the issue is fixed in 3.15.0 and 4.3.0. Impact is described as high availability (A:H)...

CVE-2026-53550

js-yaml vulnerability CVE-2026-53550 stems from the merge-key handling (<<) in lib/loader.js, causing quadratic parse-time DoS when processing crafted YAML with repeated aliases prior to version 4.2.0. Affected: js-yaml

CVE-2026-59870

CVE-2026-59870 affects js-yaml prior to 5.2.1. The YAML11_SCHEMA’s handling of the !!omap tag in omap.ts performs a linear duplicate-key scan on each insertion, causing O(n^2) CPU usage when yaml.load() parses crafted ordered-map documents. Red Hat and NVD entries confirm this results in CPU-inte...

CVE-2013-4660

CVE-2013-4660 affects the JS-YAML package for Node.js prior to 2.0.5. The vulnerability arises when parsing YAML input with the unsafe !!js/function tag, which can trigger an eval and allow remote code execution. IBM X-Force/other sources confirm a high-severity impact (code execution via crafted...

CVE-2026-59868

The CVE-2026-59868 Issue: js-yaml (JavaScript YAML parser/dumper) is vulnerable when merge keys are enabled. From versions 5.0.0 up to 5.2.0, a chain of mappings using merge keys can cause quadratic CPU time on documents that grow linearly, leading to DoS under some inputs. A fix was released in ...