CVE-2026-44665
MEDIUMfast-xml-builder: Attribute values with unwanted quotes can bypass malicious or unwanted attributes
Title source: cnaDescription
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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/NaturalIntelligence/fast-xml-builder/security/advisories/GHSA-5wm8-gmm8-39j9
Scores
CVSS v3
6.1
EPSS
0.0001
EPSS Percentile
1.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-91
Status
published
Products (2)
NaturalIntelligence/fast-xml-builder
< 1.1.7
npm/fast-xml-builder
0 - 1.1.7npm
Published
May 13, 2026
Tracked Since
May 13, 2026