CVE-2026-105835 PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp Endpoint
Attackers can brute force TOTP codes to bypass two-factor authentication and gain full access to user accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-105835?
CVE-2026-105835 is a critical vulnerability in planka, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-307
Which versions are affected by CVE-2026-105835?
How do I fix CVE-2026-105835?
No fix has been published for CVE-2026-105835 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-105835 being exploited?
There is no known exploitation of CVE-2026-105835 in the wild and no public exploit code.
Sources
Also known as GHSA-vxgr-w3f5-4g4j.