#VU123126 NULL pointer dereference in fast-xml-parser - CVE-2026-26278

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Main Vulnerability Database Vulnerabilities #VU123126

#VU123126 NULL pointer dereference in fast-xml-parser - CVE-2026-26278

Published: February 23, 2026


Vulnerability identifier: #VU123126
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2026-26278
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vulnerable software:
fast-xml-parser
Software vendor:
Natural Intelligence

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the replaceEntitiesValue() function in OrderedObjParser.js. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Remediation

Install updates from vendor's website.

External links