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Advisories

listmonk 6.0.0 before 7.0.0-beta.2 TOTP Brute-Force via /admin/login/twofa

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Severity
critical
Date
Affecting

  • listmonk >= 6.0.0, < 7.0.0-beta.2

CWE
  • CWE-307 Improper Restriction of Excessive Authentication Attempts
CVSS
9.1
CVSS V4 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
Credit
Komiljon Ayubov, Kailash Nadh
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.

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