---
id: CVE-2022-3290
aliases:
  - GHSA-5v95-j4rr-6f3c
  - PYSEC-2022-292
title: rdiffweb's unlimited username field length can lead to DoS
summary: rdiffweb's unlimited username field length can lead to DoS
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: rdiffweb
product: rdiffweb
ecosystem: pip
affected:
  - rdiffweb < 2.4.8
patched:
  - rdiffweb 2.4.8
published: '2022-09-27'
updated: '2026-07-09'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-5v95-j4rr-6f3c'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2022-3290'
  - url: >-
      https://github.com/ikus060/rdiffweb/commit/667657c6fe2b336c90be37f37fb92f65df4feee3
  - url: 'https://github.com/ikus060/rdiffweb'
  - url: >-
      https://github.com/pypa/advisory-database/tree/main/vulns/rdiffweb/PYSEC-2022-292.yaml
  - url: >-
      https://github.com/pypa/advisory-database/tree/main/vulns/rdiffweb/PYSEC-2022-43184.yaml
  - url: 'https://huntr.dev/bounties/d8b8519d-96a5-484c-8141-624c54290bf5'
tags:
  - osv
  - pip
epss: 0.00769
epssPercentile: 0.54115
ingestedAt: '2026-07-09T18:56:35.190Z'
---

## Overview

rdiffweb prior to 2.4.8 is vulnerable to a potential Dos attack via an unlimited length "username" field. This can result in excess memory consumption, or memory corruption, leading to a Denial of Service (DoS). This issue is patched in version 2.4.8. There are no known workarounds.

## Affected packages

- `rdiffweb < 2.4.8`

## Remediation

Upgrade to a patched release:

- `rdiffweb 2.4.8`