SB2026022328 - Incorrect Regular Expression in fast-xml-parser
Published: February 23, 2026
Security Bulletin ID
SB2026022328
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 security vulnerability.
1) Incorrect Regular Expression (CVE-ID: CVE-2026-25896)
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to insufficient input validation when processing regular expressions in DOCTYPE entity names. A remote attacker can bypass the XML entity encoding.
Remediation
Install update from vendor's website.