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Package details: pkg:npm/fast-xml-parser@4.0.0-beta.0
purl pkg:npm/fast-xml-parser@4.0.0-beta.0
Next non-vulnerable version 4.1.2
Latest non-vulnerable version 5.3.8
Risk 3.4
Vulnerabilities affecting this package (1)
Vulnerability Summary Fixed by
VCID-15hj-tpge-5qed
Aliases:
CVE-2026-27942
GHSA-fj3w-jwp8-x2g3
fast-xml-parser has stack overflow in XMLBuilder with preserveOrder Application crashes with stack overflow when user use XML builder with `prserveOrder:true` for following or similar input ``` [{ 'foo': [ { 'bar': [{ '@_V': 'baz' }] } ] }] ``` Cause: `arrToStr` was not validating if the input is an array or a string and treating all non-array values as text content. _What kind of vulnerability is it? Who is impacted?_
4.5.4
Affected by 0 other vulnerabilities.
5.3.8
Affected by 0 other vulnerabilities.
Vulnerabilities fixed by this package (0)
Vulnerability Summary Aliases
This package is not known to fix vulnerabilities.

Date Actor Action Vulnerability Source VulnerableCode Version
2026-05-31T01:08:00.024685+00:00 GHSA Importer Affected by VCID-15hj-tpge-5qed https://github.com/advisories/GHSA-fj3w-jwp8-x2g3 38.6.0
2026-05-30T21:07:20.651492+00:00 GitLab Importer Affected by VCID-15hj-tpge-5qed https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/fast-xml-parser/CVE-2026-27942.yml 38.6.0