CVE-2019-18836

7.5 highEPSS 1.9%

High (7.5). EPSS 1.9% chance of exploitation in the next 30 days.

Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.9% chance of exploitation in the next 30 days; higher than 80% of CVEs (scores of 2026-10-31)
CWE: CWE-835
Published: 2019-11-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

envoyproxy:envoy
istio:istio

References

https://blog.envoyproxy.io
https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46
https://github.com/istio/istio/issues/18229
https://groups.google.com/forum/#%21forum/envoy-users
https://blog.envoyproxy.io

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