---
description: Cloudflare WAF managed rulesets 2026-08-17 release
title: WAF Release - 2026-08-17
image: https://developers.cloudflare.com/changelog/post/2026-08-17-waf-release/og.png?v=4a55f908350b97bb
---

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August 17, 2026

## WAF Release - 2026-08-17

[WAF](https://developers.cloudflare.com/waf/)

Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/changelog/post/2026-08-17-waf-release/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

This release updates WordPress remote code execution rule metadata in the Cloudflare Managed Ruleset and Cloudflare Free Ruleset to identify CVE-2026-65640.

**Key Findings**

- CVE-2026-65640: A remote code execution vulnerability affecting WordPress core and plugin components. Remote, unauthenticated attackers can execute arbitrary system commands to gain unauthorized access or establish backdoors on host servers.

**Impact**

The WordPress changes update rule metadata only; detection behavior and actions remain unchanged.

| Ruleset | Rule ID | Legacy Rule ID | Description | Previous Action | New Action | Comments |
| --- | --- | --- | --- | --- | --- | --- |
| Cloudflare Managed Ruleset | ...3590a4ad | N/A | Wordpress - Remote Code Execution - CVE:CVE-2026-65640 | Block | N/A | Rule metadata description refined. Detection unchanged. |
| Cloudflare Free Ruleset | ...cfe1a93c | N/A | Wordpress - Remote Code Execution - CVE:CVE-2026-65640 | Block | N/A | Rule metadata description refined. Detection unchanged. |

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