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CVE-2026-66691 – Unauthenticated Broken Access Control / Account Takeover – Nokri WordPress Theme (≤

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Summary

CVE-2026-66691 is a critical, unauthenticated broken access control vulnerability in the Nokri WordPress theme (developed by scriptsbundle), affecting versions up to and including 1.6.6. The flaw stems from a weak password recovery mechanism (CWE-640) that can be exploited without authentication or user interaction. It carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: the theme’s password recovery/reset functionality fails to properly validate access control, classified under CWE-640 (Weak Password Recovery Mechanism for Forgotten Password).
  • Trigger conditions: no authentication or prior user interaction is required to exploit the flaw.
  • Attack vector: network-based (AV:N), low attack complexity (AC:L), no privileges required (PR:N).
  • Impact: successful exploitation can compromise confidentiality, integrity, and availability at the highest level, potentially allowing an attacker to take over accounts (including administrative accounts) on affected WordPress sites running the theme.

Affected software

  • Nokri WordPress Theme (scriptsbundle) — versions up to and including 1.6.6
  • Fixed in version 1.6.7 and later

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Upgrade the Nokri theme to version 1.6.7 or later, which resolves the broken access control issue.
  • If immediate patching is not possible: restrict or monitor access to password recovery/reset endpoints, enable a Web Application Firewall (WAF) rule to block anomalous or unauthenticated password-reset requests, and enforce multi-factor authentication for administrative accounts as a compensating control.

References

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