CVE-2026-32729 — Runtipi has a TOTP two-factor authentication bypass via unrestricted brute-force on `/api/auth/verify-totp`

Description (CNA)

Runtipi is a personal homeserver orchestrator. Prior to 4.8.1, The Runtipi /api/auth/verify-totp endpoint does not enforce any rate limiting, attempt counting, or account lockout mechanism. An attacker who has obtained a user's valid credentials (via phishing, credential stuffing, or data breach) can brute-force the 6-digit TOTP code to completely bypass two-factor authentication. The TOTP verification session persists for 24 hours (default cache TTL), providing an excessive window during which the full 1,000,000-code keyspace (000000–999999) can be exhausted. At practical request rates (~500 req/s), the attack completes in approximately 33 minutes in the worst case. This vulnerability is fixed in 4.8.1.

Affected (CNA)

Vendor / product	Versions
runtipi / runtipi	affected < 4.8.1

CWE

CWE-307, CWE-799

References

https://github.com/runtipi/runtipi/security/advisories/GHSA-v6gf-frxm-567w

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.