Improper Encoding or Escaping of Output 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.
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- published27 Jun 2026
- disclosed25 Jun 2026
- creditUnknown
Introduced: 25 Jun 2026
CVE-2026-40011 (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 Improper Encoding or Escaping of Output via the prometheus endpoint. An attacker can cause invalid output to be produced and prevent the endpoint from being scraped by sending a large number of crafted DNS queries, which triggers a dynamic block with a problematic value.