CVE-2026-105835
PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp Endpoint
- State
- Published
- Severity
- 9.1 Critical
- Published
- Oct 6, 2026
- Updated
- Oct 9, 2026
- Reserved
- Oct 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.1 Critical | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-307 Improper Restriction of Excessive Authentication Attempts
Affected Products
| Product | Versions |
|---|---|
plankaplanka |
|
References
- Patch Commitpatch
- verify-totp controller at v2.2.1technical-description
- https://github.com/plankanban/plankaproduct
- VulnCheck Advisory: PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp Endpointthird-party-advisory
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