SB2025122946 - Improper input validation in nestjs
Published: December 29, 2025
Security Bulletin ID
SB2025122946
CSH Severity
High
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-2025-69211)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to insufficient validation of user-supplied input within the @nestjs/platform-fastify component. A remote non-authenticated attacker can bypass authentication process by providing url-encoded representations of characters in application routes and gain unauthorized access to the application.
Remediation
Install update from vendor's website.