SB2026010775 - Remote denial of service in Quarkus

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Main Vulnerability Database SB2026010775

SB2026010775 - Remote denial of service in Quarkus

Published: January 7, 2026

Security Bulletin ID SB2026010775
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Resource management error (CVE-ID: CVE-2025-66560)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application. When a response is being written, the framework waits for previously written response chunks to be fully transmitted before proceeding. If the client connection is dropped during this waiting period, the associated worker thread is never released and becomes permanently blocked.  A remote attacker can initiate multiple requests to the server and keep dropping the connections exhausting the available worker threads.


Remediation

Install update from vendor's website.

References