CVE-2026-44665: XML Injection (aka Blind XPath Injection)

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 vulnerabili...

CVE-2026-44664: XML Injection (aka Blind XPath Injection)

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...

@aws-amplify/graphql-api-construct (1.21.2), @vivliostyle/cli (>=10.4.0, <=10.5.0) potentially affected by CVE-2026-44665 via fast-xml-builder (>=1.1.1, <=1.1.4)

fast-xml-builder NPM version =1.1.1, =10.4.0, =10.5.0 Source cves: CVE-2026-44665 Source advisory: SNYK:JS-FASTXMLBUILDER-16540558...

@aws-amplify/graphql-api-construct (1.21.2), @vivliostyle/cli (>=10.4.0, <=10.5.0) potentially affected by CVE-2026-44665 via fast-xml-builder (>=1.1.1, <=1.1.4)

fast-xml-builder NPM version =1.1.1, =10.4.0, =10.5.0 Source cves: CVE-2026-44665 Source advisory: OSV:GHSA-5WM8-GMM8-39J9...

NPM: fast-xml-builder allows attribute values with unwanted quotes to bypass malicious or unwanted attributes

NPM: fast-xml-builder allows attribute values with unwanted quotes to bypass malicious or unwanted attributes vulnerability discovered by ? in WordPress Npm fast-xml-builder versions = 1.1.6...

GHSA-5WM8-GMM8-39J9 fast-xml-builder allows attribute values with unwanted quotes to bypass malicious or unwanted attributes

Summary 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. Detail Malicious Input a: "@attr": '" onClick="alert1' Output x...

XML Injection

Overview Affected versions of this package are vulnerable to XML Injection due to the incomplete sanitization of XML comments. An attacker can inject arbitrary XML or HTML content by including three consecutive dashes in the comment value. Note: This issue was introduced by the fix for...

NPM: fast-xml-builder Comment Value regex can be bypassed

NPM: fast-xml-builder Comment Value regex can be bypassed vulnerability discovered by ? in WordPress Npm fast-xml-builder versions 1.1.5...

@aws-amplify/graphql-api-construct (1.21.2), @vivliostyle/cli (>=10.4.0, <=10.5.0) potentially affected by CVE-2026-41650 +1 more via fast-xml-builder (>=1.1.1, <=1.1.4)

fast-xml-builder NPM version =1.1.1, =10.4.0, =10.5.0 Source cves: CVE-2026-41650, CVE-2026-44664 Source advisory: SNYK:JS-FASTXMLBUILDER-16133760...