---
id: CVE-2024-1765
aliases:
  - GHSA-78wx-jg4j-5j6g
title: >-
  quiche vulnerable to unlimited resource allocation by QUIC CRYPTO frames
  flooding
summary: >-
  quiche vulnerable to unlimited resource allocation by QUIC CRYPTO frames
  flooding
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: quiche
product: quiche
ecosystem: rust
affected:
  - quiche < 0.19.2
  - 'quiche >= 0.20.0, < 0.20.1'
patched:
  - quiche 0.19.2
  - quiche 0.20.1
published: '2024-03-13'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-78wx-jg4j-5j6g'
references:
  - url: >-
      https://github.com/cloudflare/quiche/security/advisories/GHSA-78wx-jg4j-5j6g
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-1765'
  - url: >-
      https://github.com/cloudflare/quiche/commit/1017466c143fc93a82b286a1ba35e53334cdf8e2
  - url: >-
      https://github.com/cloudflare/quiche/commit/11dbf5461ab657bbc02e466d719070124b27ef3c
  - url: 'https://github.com/cloudflare/quiche'
  - url: 'https://github.com/cloudflare/quiche/releases/tag/0.19.2'
  - url: 'https://github.com/cloudflare/quiche/releases/tag/0.20.1'
tags:
  - osv
  - rust
epss: 0.01175
epssPercentile: 0.66203
ingestedAt: '2026-07-09T18:56:37.287Z'
---

## Overview

### Impact

Cloudflare Quiche (through version 0.19.1/0.20.0) was affected by an unlimited resource allocation vulnerability causing rapid increase of memory usage of the system running quiche server or client.

A remote attacker could take advantage of this vulnerability by repeatedly sending an unlimited number of 1-RTT CRYPTO frames after previously completing the QUIC handshake.
Exploitation was possible for the duration of the connection which could be extended by the attacker.

### Patches

Quiche 0.19.2 and 0.20.1 are the earliest versions containing the fix for this issue.

## Affected packages

- `quiche < 0.19.2`
- `quiche >= 0.20.0, < 0.20.1`

## Remediation

Upgrade to a patched release:

- `quiche 0.19.2`
- `quiche 0.20.1`