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Brute force of OTP login codes in OTP Login & Register Woocommerce

Priority LOW 34CWE-287Published · Updated

Key facts

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

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

Summary

The OTP Login & Register Woocommerce WordPress plugin before 2.7.3 does not properly limit one-time password verification attempts (CWE-287). The attempt limit is tracked against a value the client supplies and can change freely, so the limit can be bypassed. An unauthenticated remote attacker can brute-force the short numeric login code and take over an account without its password. The references link a public exploit.

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

Description from the CNA

The OTP Login & Register Woocommerce WordPress plugin before 2.7.3 does not adequately limit one-time-password verification attempts, because the attempt limit is tracked against a value the client itself supplies and can change freely, allowing an unauthenticated attacker to bypass the limit and brute-force the short numeric login code to take over an account without its password.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00265 18th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed OTP Login & Register Woocommerce (Unknown): 2.7.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
UnknownOTP Login & Register Woocommercebefore 2.7.32.7.3Patch availableCNA
  • OTP Login & Register Woocommerce VendorUnknown Affected before 2.7.3 Fixed in 2.7.3 Patch available CNA

Remediation

Update OTP Login & Register Woocommerce to version 2.7.3 or later, which fixes this issue.

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

  • Fix · CNA OTP Login & Register Woocommerce (Unknown) Fixed in 2.7.3

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-110135
  2. 2026-10-16 Alias added: GHSA-qqhp-9fwp-9wqc

References

Sources