---
id: CVE-2021-29041
title: >-
  Denial-of-service (DoS) vulnerability in the Multi-Factor Authentication
  module in Liferay DXP 7.3 before fix pack 1 allows remote authenticated
  attackers to prevent any user from authenticating by (1) enabling Time-based
  One-time passwo…
summary: >-
  Denial-of-service (DoS) vulnerability in the Multi-Factor Authentication
  module in Liferay DXP 7.3 before fix pack 1 allows remote authenticated
  attackers to prevent any user from authenticating by (1) enabling Time-based
  One-time passwo…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
vendor: liferay
product: dxp
affected:
  - dxp < 7.3
  - dxp = 7.3
patched:
  - dxp 7.3
published: '2021-05-16'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2021-29041'
references:
  - url: 'https://issues.liferay.com/browse/LPE-17131'
    label: cve@mitre.org
  - url: 'http://liferay.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://issues.liferay.com/browse/LPE-17131'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01124
epssPercentile: 0.64853
ingestedAt: '2026-07-05T00:59:25.856Z'
---

## Overview

Denial-of-service (DoS) vulnerability in the Multi-Factor Authentication module in Liferay DXP 7.3 before fix pack 1 allows remote authenticated attackers to prevent any user from authenticating by (1) enabling Time-based One-time password (TOTP) on behalf of the other user or (2) modifying the other user's TOTP shared secret.

## Affected

- `dxp < 7.3`
- `dxp = 7.3`

## Remediation

Upgrade past the affected range:

- `dxp 7.3`