---
id: CVE-2026-105835
title: >-
  PLANKA 2.2.0 through 2.2.1 fails to limit incorrect TOTP codes submitted to
  POST /api/access-tokens/verify-totp, allowing attackers to brute force
  two-factor authentication codes
summary: >-
  PLANKA 2.2.0 through 2.2.1 fails to limit incorrect TOTP codes submitted to
  POST /api/access-tokens/verify-totp, allowing attackers to brute force
  two-factor authentication codes. Attackers who know a user's password can
  reuse the ten-mi…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-307
vendor: planka
product: planka
affected:
  - planka >= 2.2.0 <= 2.2.1
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T13:16:46.760'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105835'
references:
  - url: 'https://github.com/plankanban/planka'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/plankanban/planka/blob/v2.2.1/server/api/controllers/access-tokens/verify-totp.js
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/plankanban/planka/commit/de4d7688317829e2a0b665fe9dbf39eaf127b6f9
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/planka-2.2.0-through-2.2.1-totp-brute-force-via-verify-totp-endpoint
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T14:00:19.132Z'
---

## Overview

PLANKA 2.2.0 through 2.2.1 fails to limit incorrect TOTP codes submitted to POST /api/access-tokens/verify-totp, allowing attackers to brute force two-factor authentication codes. Attackers who know a user's password can reuse the ten-minute pending token to guess six-digit codes until one succeeds, obtaining a full access token.

## Remediation

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