← Vulnerability feed

Vulnerability record · CVE-2020-8661 · published 4 March 2020

CVE-2020-8661: Envoyproxy envoy uncontrolled resource consumption vulnerability

Envoyproxy · Envoy

CNCF Envoy through 1.13.0 may consume excessive amounts of memory when responding internally to pipelined requests.

7.5 CVSS 3.1 High EPSS 1.9% · top 21.3% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score, v2 5.0
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
2 Oct 2026Last modified by NVD

Description

CNCF Envoy through 1.13.0 may consume excessive amounts of memory when responding internally to pipelined requests.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2020:0734 Release NotesThird Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-36cq-ww7h-p4j7 Third Party Advisory
https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history Release NotesThird Party Advisory
https://access.redhat.com/errata/RHSA-2020:0734 Release NotesThird Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-36cq-ww7h-p4j7 Third Party Advisory
https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history Release NotesThird Party Advisory

Track CVE-2020-8661 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed10.0CVE-2019-9901Envoyproxy envoy vulnerabilityEnvoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access con…EPSS 5.0%9.8CVE-2023-35941Envoyproxy envoy vulnerabilityEnvoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12…EPSS 0.81%9.8CVE-2023-27488Envoyproxy envoy improper input validation vulnerabilityEnvoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, …EPSS 0.73%9.8CVE-2021-3586Redhat openshift service mesh insecure default initialization vulnerabilityA flaw was found in servicemesh-operator. The NetworkPolicy resources installed for Maistra do not properly specify which ports may be accessed, allo…EPSS 1.0%9.8CVE-2022-21654Envoyproxy envoy improper certificate validation vulnerabilityEnvoy is an open source edge and service proxy, designed for cloud-native applications. Envoy's tls allows re-use when some cert validation settings …EPSS 1.1%9.8CVE-2020-27846Grafana vulnerabilityA signature verification vulnerability exists in crewjam/saml. This flaw allows an attacker to bypass SAML Authentication. The highest threat from th…EPSS 4.9%9.8CVE-2019-18801Envoyproxy envoy out-of-bounds write vulnerabilityAn issue was discovered in Envoy 1.12.0. An untrusted remote client may send HTTP/2 requests that write to the heap outside of the request buffers wh…EPSS 2.5%

Source: NIST National Vulnerability Database (record CVE-2020-8661), CISA KEV, FIRST EPSS (scores of 2026-10-08). This page is refreshed as NVD updates the record.