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  4. CVE 2026 126571 padloc 400 before 431 email mfa code brute force
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Back to active CVEs
Medium · CVSS 6.3CVE-2026-126571

Padloc 4.0.0 before 4.3.1 Email MFA Code Brute Force via retrieveMFATokenCVE-2026-126571

Answer in brief

CVE-2026-126571 records a Medium severity (CVSS 6.3) vulnerability in Padloc 4.0.0 before 4.3.1 Email MFA Code Brute Force via retrieveMFAToken. The current sources do not mark it as known exploited. The current feed maps padloc/padloc (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 11, 2026Updated Nov 11, 2026Source checked Nov 11, 2026First seen by HOL Nov 11, 2026Material review Nov 11, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps padloc/padloc (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
padloc/padlocgeneric>=4.0.0 <4.3.14.3.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for padloc/padloc.
  2. 2Review the reported fix. Update padloc/padloc to 4.3.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 11, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Padloc 4.0.0 before 4.3.1 Prototype Pollution via SCIM PATCH setPath()Same padloc/padloc package

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-307
Source
CVE List V5
Source checked
Nov 11, 2026
References
4 linked sources
Open source record