CVE-2026-44664

Summary

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.

Affected Software

Weaknesses

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

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/NaturalIntelligence/fast-xml-builder/security/advisories/GHSA-45c6-75p6-83cc

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