Use After Free Affecting envoyproxy/envoy package, versions [1.36.0,1.36.9)[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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Test your applications- Snyk IDSNYK-UNMANAGED-ENVOYPROXYENVOY-17661100
- published28 Jun 2026
- disclosed26 Jun 2026
- creditUnknown
Introduced: 26 Jun 2026
CVE-2026-47205 (opens in a new tab)How to fix?
Upgrade envoyproxy/envoy to version 1.36.9, 1.37.5, 1.38.3 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the ext_authz filter during concurrent processing of per-route authorization overrides and rapid downstream client disconnects. An attacker can cause a process crash by rapidly establishing and tearing down streams, leading to a use-after-free condition when asynchronous callbacks are triggered after the underlying client object has been destroyed.