CVE-2026-25896
Description
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.
Risk Information
Base Score
9.3
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
EPSS Score
Exploitation Probability
0.019
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Multiple Vulnerabilities are affected in IBM App Connect Enterprise 13.0.6.1 | Windows |
| Vulnerabilities CVE-2025-13465,CVE-2026-25639,CVE-2026-25896,CVE-2026-26278 are affected in IBM App Connect Enterprise 12.0.12.23 | Windows |
| Multiple Vulnerabilities are affected in IBM App Connect Enterprise 12.0.12.23 | Windows |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234