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Authentication bypass in asVereinbase WordPress plugin via 2FA validation

Priority MEDIUM 49CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-287.

Summary

The asVereinbase WordPress plugin before 1.1.8 does not require a valid password or a genuine second factor before authenticating a user. It treats an empty stored value as a match (CWE-287), so an unauthenticated remote attacker can log in as any user, including an administrator. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The asVereinbase WordPress plugin before 1.1.8 does not require a valid password or a genuine second factor before authenticating a user, treating an empty stored value as a match, so an unauthenticated attacker can log in as any user, including an administrator.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0036 30th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed asVereinbase (Unknown): 1.1.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownasVereinbasebefore 1.1.81.1.8Patch availableCNA
  • asVereinbase VendorUnknown Affected before 1.1.8 Fixed in 1.1.8 Patch available CNA

Remediation

Update asVereinbase to version 1.1.8, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA asVereinbase (Unknown) Fixed in 1.1.8

Timeline

  1. 2026-10-24 Threatist record created from CVE-2026-110956
  2. 2026-10-24 Alias added: GHSA-3838-5p3q-5cgw
  3. 2026-10-24 CVSS score added · CISA ADP
  4. 2026-10-24 Weakness changed · CISA ADP
  5. 2026-10-24 CISA SSVC decision points changed
  6. 2026-10-24 Priority changed: LOW → MEDIUM

References

Sources