SB2026040958 - Denial of service in React Server Components
Published: April 9, 2026 Updated: April 17, 2026
Security Bulletin ID
SB2026040958
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-23869)
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in App Router Server Function endpoints when deserializing a specially crafted HTTP request. A remote attacker can send a specially crafted HTTP request to cause a denial of service.
The issue affects environments using the App Router.
Remediation
Install update from vendor's website.