Allocation of Resources Without Limits or Throttling Affecting dnsdist package, versions [,1.9.15)[2.0.0,2.0.7)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Allocation of Resources Without Limits or Throttling vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-UNMANAGED-DNSDIST-17660698
- published27 Jun 2026
- disclosed25 Jun 2026
- creditUnknown
Introduced: 25 Jun 2026
CVE-2026-40211 (opens in a new tab)How to fix?
Upgrade dnsdist to version 1.9.15, 2.0.7 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the handling of crafted DNS over HTTP/3 queries in the DoH3 process. An attacker can exhaust system memory by sending a large number of specially crafted queries, causing exceptions that delay buffer deallocation and potentially leading to an out-of-memory condition.