CVE-2026-105835 PUBLISHED

PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp Endpoint

Assigner: VulnCheck
Reserved: 05.10.2026 Published: 06.10.2026 Updated: 06.10.2026

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.

CVSS Vector: 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
CVSS Score: 9.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	High	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS Score: 7.4

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	planka
Product	planka
Versions	Default: unaffected affected from 2.2.0 to 2.2.1 (incl.)

CVE-2026-105835 PUBLISHED

PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp Endpoint

Metrics

Product Status

Credits

References

Problem Types