---
id: CVE-2024-28854
aliases:
  - RUSTSEC-2024-0341
  - GHSA-2qph-qpvm-2qf7
title: Slow loris vulnerability with default configuration
summary: Slow loris vulnerability with default configuration
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'
vendor: tls-listener
product: tls-listener
ecosystem: rust
affected:
  - 'tls-listener >= 0.0.0-0, < 0.10.0'
patched:
  - tls-listener 0.10.0
published: '2024-03-15'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T18:00:02.661145894Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/RUSTSEC-2024-0341'
references:
  - url: 'https://crates.io/crates/tls-listener'
  - url: 'https://rustsec.org/advisories/RUSTSEC-2024-0341.html'
  - url: >-
      https://github.com/tmccombs/tls-listener/commit/d5a7655d6ea9e53ab57c3013092c5576da964bc4
  - url: >-
      https://github.com/tmccombs/tls-listener/security/advisories/GHSA-2qph-qpvm-2qf7
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-28854'
  - url: 'https://en.wikipedia.org/wiki/Slowloris_(computer_security)'
  - url: 'https://github.com/tmccombs/tls-listener'
  - url: 'https://github.com/tmccombs/tls-listener/releases/tag/v0.10.0'
tags:
  - osv
  - rust
epss: 0.00973
epssPercentile: 0.61799
ingestedAt: '2026-08-25T19:26:23.379Z'
---

## Overview

tls-listener is a rust lang wrapper around a connection listener to support TLS. With the default configuration of tls-listener, a malicious user can open 6.4 `TcpStream`s a second, sending 0 bytes, and can trigger a DoS. The default configuration options make any public service using `TlsListener::new()` vulnerable to a slow-loris DoS attack. This impacts any publicly accessible service using the default configuration of tls-listener in versions prior to 0.10.0. Users are advised to upgrade. Users unable to upgrade may mitigate this by passing a large value, such as `usize::MAX` as the parameter to `Builder::max_handshakes`.

## Affected packages

- `tls-listener >= 0.0.0-0, < 0.10.0`

## Remediation

Upgrade to a patched release:

- `tls-listener 0.10.0`