Is fast-xml-builder affected by CVE-2026-44665?

npm fast-xml-builder is affected in <1.1.7.

Is CVE-2026-44665 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

high

CVE-2026-44665

Q: Is CVE-2026-44665 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

npm · fast-xml-builder

Summary

fast-xml-builder allows attribute values with unwanted quotes to bypass malicious or unwanted attributes

Severity: high
EPSS: 0.2% (p9)
Also known as: GHSA-5wm8-gmm8-39j9
Published: 2026-05-08

References

https://github.com/NaturalIntelligence/fast-xml-builder/security/advisories/GHSA-5wm8-gmm8-39j9
https://nvd.nist.gov/vuln/detail/CVE-2026-44665
https://github.com/NaturalIntelligence/fast-xml-builder

Related advisories

CVE-2026-44664 — medium · npm/fast-xml-builder

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.