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CVE-2026-14321 – Denial of Service via IP Spoofing – Divi Dash WordPress Plugin (< 1.0.7)

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Summary

CVE-2026-14321 is a Denial of Service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting the Divi Dash WordPress plugin in all versions prior to 1.0.7. The plugin fails to validate the source of the client IP address it relies on for its rate-limiting and banning functionality, allowing unauthenticated attackers to spoof arbitrary IP addresses. The issue carries a CVSS v3.1 base score of 8.2 (High).

Technical details

  • Root cause: Divi Dash’s rate-limiting and IP-banning feature trusts client-supplied IP address values (e.g., forwarded headers) without validating that they originate from a trusted source.
  • Trigger conditions: An attacker sends requests to the WordPress site with forged/spoofed IP address values, requiring no authentication or user interaction.
  • Attack vector: Network-based, low attack complexity, no privileges or user interaction required.
  • Impact: Attackers can bypass the plugin’s rate limiting, ban arbitrary/legitimate IP addresses from the feature, and cause a stored WordPress option to grow without bound — leading to denial of service on the affected site.

Affected software

  • Divi Dash WordPress plugin: all versions before 1.0.7

Severity

  • CVSS v3.1 Base Score: 8.2 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Mitigation and recommended actions

  • Immediate: Upgrade the Divi Dash plugin to version 1.0.7 or later, which validates the source of client IP addresses used for rate limiting.
  • If immediate patching is not possible: Consider disabling the plugin’s rate-limiting/IP-banning feature until patched, and ensure any reverse proxy or CDN in front of the site is configured to strip or validate client-supplied IP headers (e.g., X-Forwarded-For) before they reach the application, so the plugin cannot be fed spoofed values.

References

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