CVE-2026-128332 PUBLISHED

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

Assigner: VulnCheck
Reserved: 13.11.2026 Published: 13.11.2026 Updated: 13.11.2026

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.

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	knadh
Product	listmonk
Versions	Default: unaffected affected from 6.0.0 to 7.0.0-beta.2 (excl.)

CVE-2026-128332 PUBLISHED

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

Metrics

Product Status

Credits

References

Problem Types