Vulnerability · Published Oct 6, 2026 · Assigned by VulnCheck
CVE-2026-105835PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp Endpoint
High 7.4
In plain English
A high-severity security flaw in planka from planka. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.3%top 75.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-307 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- Patch Commit patch
- verify-totp controller at v2.2.1 technical-description
- https://github.com/plankanban/planka product
- VulnCheck Advisory: PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp Endpoint third-party-advisory