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Description

fast-xml-builder builds XML from JSON. Prior to 1.1.7, when an input data has quotes in attribute values but process entities is not enabled, it breaks the attribute value into multiple attributes. This gives the room for an attacker to insert unwanted attributes to the XML/HTML. This vulnerability is fixed in 1.1.7.

PUBLISHED Reserved 2026-05-07 | Published 2026-05-13 | Updated 2026-05-18 | Assigner GitHub_M




MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

CWE-91: XML Injection (aka Blind XPath Injection)

Product status

< 1.1.7
affected

References

github.com/...uilder/security/advisories/GHSA-5wm8-gmm8-39j9 exploit

github.com/...uilder/security/advisories/GHSA-5wm8-gmm8-39j9

cve.org (CVE-2026-44665)

nvd.nist.gov (CVE-2026-44665)

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