Description
Listmonk 6.0.0 before 7.0.0-beta.2 contains a 2FA bypass vulnerability that allows attackers with a valid password to brute-force TOTP codes because the attempt counter resets on every new password login. Attackers can repeatedly submit credentials to POST /admin/login to obtain fresh tokens, each allowing 15 more guesses, gaining sessions for 2FA-protected accounts including Super Admin.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-128332 ↗
- github.com/knadh/listmonk/blob/v7.0.0-beta.1/cmd/auth.go ↗
- github.com/knadh/listmonk/blob/v7.0.0-beta.1/internal/tmptokens/tmptokens.go ↗
- github.com/knadh/listmonk/commit/3f62a55c13dbc679b29238e890e4b90d6d4996d8 ↗
- github.com/knadh/listmonk/releases/tag/v7.0.0-beta.2 ↗
- www.vulncheck.com/advisories/listmonk-6.0.0-before-7.0.0-beta.2-totp-brute-force-via-admin-login-twofa ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.