SB2026040731 - Security restrictions bypass in nestjs nest
Published: April 7, 2026
Security Bulletin ID
SB2026040731
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) Improper access control (CVE-ID: CVE-2026-33011)
The vulnerability allows a remote attacker to bypass middleware protections.
The vulnerability exists due to improper access control in GET middleware handling when processing HEAD requests that are redirected to corresponding GET handlers. A remote attacker can send a HEAD request to bypass middleware protections.
The targeted handler is still executed, but the HTTP response does not include a body.
Remediation
Install update from vendor's website.