CVE-2026-44665— fast-xml-builder: Attribute values with unwanted quotes can bypass malicious or unwanted attributes
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-44665
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
fast-xml-builder: Attribute values with unwanted quotes can bypass malicious or unwanted attributes
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
XML注入(XPath盲注)
Source: NVD (National Vulnerability Database)
Vulnerability Title
fast-xml-builder 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
fast-xml-builder是Natural Intelligence开源的一个将JSON数据转换为XML格式的构建工具。 fast-xml-builder 1.1.7之前版本存在安全漏洞，该漏洞源于输入数据在属性值中有引号但未启用处理实体时，将属性值拆分为多个属性，可能导致攻击者插入不需要的属性到XML或HTML。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| NaturalIntelligence | fast-xml-builder | < 1.1.7 | - |
II. Public POCs for CVE-2026-44665
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-44665
请登录查看更多情报信息。
IV. Related Vulnerabilities
Same vendor: NaturalIntelligence
- CVE-2026-44664
fast-xml-builder: Comment Value bypass regex - CVE-2026-41650
fast-xml-parser XMLBuilder: XML Comment and CDATA Injection - CVE-2026-33349
fast-xml-parser: Entity Expansion Limits Bypassed When Set t - CVE-2026-33036
fast-xml-parser affected by numeric entity expansion bypassi - CVE-2026-27942
fast-xml-parser has stack overflow in XMLBuilder with preser
Same weakness: CWE-91
- CVE-2026-44664
fast-xml-builder: Comment Value bypass regex - CVE-2026-41650
fast-xml-parser XMLBuilder: XML Comment and CDATA Injection - CVE-2026-41675
xmldom: XML node injection through unvalidated processing in - CVE-2026-41674
xmldom: XML injection through unvalidated DocumentType seria - CVE-2026-41672
xmldom: XML node injection through unvalidated comment seria
V. Comments for CVE-2026-44665
No comments yet