CVE-2026-44664

Description

fast-xml-builder builds XML from JSON. In 1.1.5, the fix for CVE-2026-41650 in fast-xml-parser sanitizes -- sequences in XML comment content using .replace(/--/g, '- -'). This skip the values containing three consecutive dashes (e.g., --->...), allowing an attacker to break out of an XML comment and inject arbitrary XML/HTML content. This vulnerability is fixed in 1.1.6.

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

Problem types

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

Product status

References

github.com/...uilder/security/advisories/GHSA-45c6-75p6-83cc

cve.org (CVE-2026-44664)

nvd.nist.gov (CVE-2026-44664)

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