CVE-2026-44664
fast-xml-builder: Comment Value bypass regex
- State
- Published
- Severity
- 6.1 Medium
- Published
- May 13, 2026
- Updated
- May 13, 2026
- Reserved
- May 7, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | GitHub_M |
Weaknesses
- CWE-91 XML Injection (aka Blind XPath Injection)
Affected Products
| Product | Versions |
|---|---|
fast-xml-builderNaturalIntelligence |
|
References
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