---
id: "CVE-2026-128332"
page: "https://infrastack.ai/live/CVE-2026-128332"
kind: "vulnerability"
aliases: ["CVE-2026-128332"]
title: "Listmonk: 2FA bypass lets password holders brute-force TOTP codes"
severity: "critical"
cvss: 9.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["email-marketing", "listmonk", "package", "self-hosted"]
not_affected_if: ["auth-required", "default-config"]
published_at: "2026-11-13T10:18:13+00:00"
first_seen_at: "2026-11-13T10:47:33+00:00"
updated_at: "2026-11-13T10:48:37+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-128332", "first_seen_at": "2026-11-13T10:47:33+00:00"}]
exploit_sources: []
---

# Listmonk: 2FA bypass lets password holders brute-force TOTP codes

Link for people: https://infrastack.ai/live/CVE-2026-128332 (this .md is for agents)

Listmonk 6.0.0 before 7.0.0-beta.2 resets its TOTP attempt counter on every new password login. An attacker with a valid password can keep logging in to get fresh tokens, each allowing 15 more guesses, and eventually gets a session on 2FA-protected accounts, including Super Admin.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the running Listmonk version (`listmonk --version` or the admin footer); versions `6.0.0` up to but not including `7.0.0-beta.2` are affected.
- Check whether two-factor authentication is enabled for admin users.
- Review logs for repeated POST requests to `/admin/login` from a single source.

## Fix

- Listmonk: move to `7.0.0-beta.2` or later.

## Timeline

- 2026-11-13T10:47:33+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-128332

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/listmonk-6.0.0-before-7.0.0-beta.2-totp-brute-force-via-admin-login-twofa
- [fix] Patch: github.com https://github.com/knadh/listmonk/commit/3f62a55c13dbc679b29238e890e4b90d6d4996d8
- [fix] Release notes: github.com https://github.com/knadh/listmonk/releases/tag/v7.0.0-beta.2

## From the sources

Listmonk 6.0.0 before 7.0.0-beta.2 contains a 2FA bypass vulnerability that allows attackers with a valid password to brute-force TOTP codes because the attempt counter resets on every new password login. Attackers can repeatedly submit credentials to POST /admin/login to obtain fresh tokens, each allowing 15 more guesses, gaining sessions for 2FA-protected accounts including Super Admin.

---

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