Description
Padloc 4.0.0 before 4.3.1 contains an authentication bypass vulnerability in the legacy retrieveMFAToken handler that never counts wrong email verification codes toward the attempt limit. Unauthenticated attackers knowing a victim's email can brute force the 6-digit code to obtain verification tokens usable in signup, login and account recovery flows.
Published: 2026-11-11
Score: 6.3 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Tracking

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History

Wed, 11 Nov 2026 02:45:00 +0000

Type Values Removed Values Added
Description Padloc 4.0.0 before 4.3.1 contains an authentication bypass vulnerability in the legacy retrieveMFAToken handler that never counts wrong email verification codes toward the attempt limit. Unauthenticated attackers knowing a victim's email can brute force the 6-digit code to obtain verification tokens usable in signup, login and account recovery flows.
Title Padloc 4.0.0 before 4.3.1 Email MFA Code Brute Force via retrieveMFAToken
Weaknesses CWE-307
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-11T02:36:06.963Z

Reserved: 2026-11-11T02:18:34.574Z

Link: CVE-2026-126571

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-307

    Improper Restriction of Excessive Authentication Attempts