---
id: CVE-2026-100501
title: >-
  Flame through 2.4.0 contains an improper restriction of excessive
  authentication attempts vulnerability in the POST /api/auth login endpoint
  that allows unauthenticated attackers to brute-force the admin password
summary: >-
  Flame through 2.4.0 contains an improper restriction of excessive
  authentication attempts vulnerability in the POST /api/auth login endpoint
  that allows unauthenticated attackers to brute-force the admin password.
  Attackers can submit un…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N'
cwe:
  - CWE-307
vendor: pawelmalak
product: flame
affected:
  - flame <= 2.4.0
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T22:17:10.793'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100501'
references:
  - url: 'https://github.com/pawelmalak/flame'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/pawelmalak/flame/blob/v2.4.0/.docker/Dockerfile#L28'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/pawelmalak/flame/blob/v2.4.0/controllers/auth/login.js#L11-L22
    label: disclosure@vulncheck.com
  - url: 'https://github.com/pawelmalak/flame/blob/v2.4.0/routes/auth.js#L7'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/pawelmalak/flame/issues/494'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/flame-through-2.4.0-brute-force-attack-via-login-endpoint
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T22:20:31.554Z'
---

## Overview

Flame through 2.4.0 contains an improper restriction of excessive authentication attempts vulnerability in the POST /api/auth login endpoint that allows unauthenticated attackers to brute-force the admin password. Attackers can submit unlimited password guesses without rate limiting, attempt counters, lockouts, or delays to gain full administrator access and modify application configuration.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.