---
id: CVE-2024-32976
title: >-
  Envoy can enter an endless loop while decompressing Brotli data with extra
  input
summary: >-
  Envoy is a cloud-native, open source edge and service proxy. Envoyproxy with a
  Brotli filter can get into an endless loop during decompression of Brotli data
  with extra input.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-835
vendor: envoyproxy
product: envoy
affected:
  - 'envoy >= 1.30.0, <= 1.30.1'
  - 'envoy >= 1.29.0, <= 1.29.4'
  - 'envoy >= 1.28.0, <= 1.28.3'
  - 'envoy > 1.18.0, <= 1.27.5'
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2024-09-03T15:39:44.498942Z'
exploitAvailable: true
published: '2024-06-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T15:56:34.035Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2024-32976'
references:
  - url: >-
      https://github.com/envoyproxy/envoy/security/advisories/GHSA-7wp5-c2vq-4f8m
    label: >-
      https://github.com/envoyproxy/envoy/security/advisories/GHSA-7wp5-c2vq-4f8m
tags:
  - cve.org
  - exploit-available
epss: 0.00674
epssPercentile: 0.5227
ingestedAt: '2026-11-05T21:36:00.935Z'
---

## Overview

Envoy is a cloud-native, open source edge and service proxy. Envoyproxy with a Brotli filter can get into an endless loop during decompression of Brotli data with extra input.

## Affected

- `envoy >= 1.30.0, <= 1.30.1`
- `envoy >= 1.29.0, <= 1.29.4`
- `envoy >= 1.28.0, <= 1.28.3`
- `envoy > 1.18.0, <= 1.27.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.