NULL Pointer Dereference Affecting envoyproxy/envoy package, versions [1.37.0,1.37.5)[1.38.0,1.38.3)
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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- published28 Jun 2026
- disclosed26 Jun 2026
- creditUnknown
Introduced: 26 Jun 2026
CVE-2026-47220 (opens in a new tab)How to fix?
Upgrade envoyproxy/envoy to version 1.37.5, 1.38.3 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference in the log formatting process when %REQUESTED_SERVER_NAME% is used with host-related options such as HOST_FIRST or SNI_FIRST and the required host header is missing from the request headers. An attacker can cause a segmentation fault and crash the service by sending requests that omit the necessary host header.