wid-sec-w-2026-0772
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Published 2026-03-17
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View on BSI CERT-Bund ↗
IBM App Connect Enterprise (fast-xml-parser): Multiple Vulnerabilities
CVSS 9.3
CRITICAL
Risk Summary
fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. From 4.1.3to before 5.3.5, a dot (.) in a DOCTYPE entity name is treated as a regex wildcard during entity replacement, allowing an attacker to shadow built-in XML entities (<, >, &, ", ') with arbitrary values. This bypasses entity encoding and leads to XSS when parsed output is rendered. This vulnerability is fixed in 5.3.5.
CVEs (2)
Affected Vendors
IBM
Affected Products (8)
IBM
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App Connect Enterprise
<13.0.6.2
IBM
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App Connect Enterprise
13.0.6.2
IBM
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App Connect Enterprise
<12.0.12.24
IBM
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App Connect Enterprise
12.0.12.24
IBM
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App Connect Enterprise
Container Operator <12.0.22
IBM
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App Connect Enterprise
Container Operator 12.0.22
IBM
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App Connect Enterprise
Certified Container Operator <13.0.0
IBM
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App Connect Enterprise
Certified Container Operator 13.0.0
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