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cve/2021/CVE-2021-43824.md
0xMarcio cb00e1339f Update CVE list 2025-09-29 21:09
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CVE-2021-43824

Description

Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions a crafted request crashes Envoy when a CONNECT request is sent to JWT filter configured with regex match. This provides a denial of service attack vector. The only workaround is to not use regex in the JWT filter. Users are advised to upgrade.

POC

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