CVE-2026-89003 WPeMatico CVE debrief

Who should care

Defenders responsible for WordPress installations with the WPeMatico RSS Feed Fetcher plugin should assess exposure and verify that users with contributor-level access and above do not have elevated permissions.

Why it matters

CVE-2026-89003 is a vulnerability in the WPeMatico RSS Feed Fetcher WordPress plugin that allows users with contributor-level access and above to force the server to issue requests to internal-only hosts and read the responses back, potentially leading to unauthorized access and data exposure.

• Potential unauthorized access to internal hosts
• Possible data exposure through server responses
• Required verification of plugin version and user permissions
• Potential impact on server security and data confidentiality

Technical summary

The WPeMatico RSS Feed Fetcher WordPress plugin before 2.8.27 does not perform a capability check before fetching a user-supplied URL and rendering the response, allowing users with contributor-level access and above to force the server to issue requests to internal-only hosts and read the responses back. This vulnerability could potentially lead to unauthorized access and data exposure. Defenders should prioritize verifying exposure of the WPeMatico RSS Feed Fetcher WordPress plugin version and ensuring that users with contributor-level access and above do not have elevated permissions.

Defensive priority

Defenders should prioritize verifying exposure of the WPeMatico RSS Feed Fetcher WordPress plugin version and ensuring that users with contributor-level access and above do not have elevated permissions.

Recommended defensive actions

• Verify the version of the WPeMatico RSS Feed Fetcher WordPress plugin is 2.8.27 or later
• Ensure users with contributor-level access and above do not have elevated permissions
• Monitor server requests and responses for potential internal host access
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine the affected versions and potential impact. The WPeMatico RSS Feed Fetcher WordPress plugin before 2.8.27 does not perform a capability check before fetching a user-supplied URL and rendering the response. This allows users with contributor-level access and above to force the server to issue requests to internal-only hosts and read the responses back. The CVE Program record and NVD detail page provide source-

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.