SB2026072879 - Input validation error in fast-xml-builder
Published: July 28, 2026
Security Bulletin ID
SB2026072879
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2026-44664)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to inject arbitrary XML or HTML content.
The vulnerability exists due to improper input validation in XML comment content sanitization when processing comment property values. A remote attacker can supply a value containing three consecutive dashes to inject arbitrary XML or HTML content.
Only applications with the comment property enabled are vulnerable.
Remediation
Install update from vendor's website.