WAF emergency rules for WordPress and JFrog Artifactory vulnerabilities
Cloudflare's Web Application Firewall has added new managed rules to block critical vulnerabilities in WordPress (path traversal, LFI, XSS) and JFrog Artifactory (authentication bypass). Administrators should apply vendor patches to fully secure their origin servers.
This update provides immediate defense against critical vulnerabilities affecting WordPress and JFrog Artifactory, including path traversal, local file inclusion (LFI), cross-site scripting (XSS), and authentication bypass exploits.
Key Findings
-
CVE-2026-87902: A high-severity Path Traversal and Local File Inclusion (LFI) vulnerability affecting WordPress. Unauthenticated attackers can exploit this flaw to read arbitrary files on the host server, potentially exposing sensitive configuration data or system files.
-
CVE-2026-42018 & CVE-2026-82329: Critical authentication bypass vulnerabilities affecting JFrog Artifactory. Successful exploitation allows unauthenticated attackers to bypass security controls and achieve unauthorized access to the Artifactory instance.
Impact
We strongly recommend that administrators apply the latest vendor patches for WordPress and JFrog Artifactory to fully secure origin servers.
Detailed Rule Changes
| Ruleset | Rule ID | Legacy Rule ID | Description | Previous Action | New Action | Comments |
|---|---|---|---|---|---|---|
| Cloudflare Managed Ruleset | ...70a43f96 | N/A | Wordpress - Path Traversal, Local File Inclusion - CVE:CVE-2026-87902 | N/A | Block | This is a new detection. |
| Cloudflare Managed Ruleset | ...909a4db4 | N/A | Wordpress - XSS - Comment | N/A | Block | This is a new detection. |
| Cloudflare Managed Ruleset | ...c797ef03 | N/A | JFrog Artifactory - Authentication Bypass - CVE:CVE-2026-42018 | N/A | Block | This is a new detection. |
| Cloudflare Managed Ruleset | ...a813ac74 | N/A | JFrog Artifactory - Authentication Bypass - CVE:CVE-2026-82329 | N/A | Block | This is a new detection. |
Source: original entry ↗
More from Cloudflare
Follow Cloudflare to get its new changes in your feed and email digest.
Cloudflare API MCP server now serves Cloudflare skills
The Cloudflare API MCP server now integrates with the Skills over MCP extension, allowing MCP clients to discover and access Cloudflare skills. Users can add the MCP server endpoint to compatible MCP clients to access these skills.
WAF failed detections field now available in Rules
A new cf.appsec.request.failed_detections field lets you control how rules handle requests when security detections fail. This array of detection IDs covers content scanning, WAF attack scoring, attack signatures, leaked credentials, and AI-based PII/prompt injection/custom topic detection failures, and works across custom rules, rate limiting rules, and request header transform rules.
Markdown for Agents: More efficient in-process streaming conversion
Markdown for Agents now uses an in-process streaming engine at the edge to convert HTML, reducing overhead and memory use. The conversion limit increased from 2 MiB to 6 MiB, and token count headers are no longer generated.