CVE-2026-8678 richardperdaan CVE debrief

Who should care

Users of the MyParcel plugin for WordPress, especially those with subscriber-level access, should be aware of this vulnerability and take steps to protect their sites. This includes updating the plugin to the latest version, restricting access to shipment options for users with subscriber-level access, and monitoring for suspicious activity related to shipment modifications.

Technical summary

The MyParcel plugin for WordPress is vulnerable to authorization bypass due to improper verification of user authorization. This allows authenticated attackers with subscriber-level access to view and modify shipment options, including carrier, delivery type, and insurance, on any arbitrary order. The vulnerability has a CVSS score of 4.3 and a severity of MEDIUM. Affected product deployments should be confirmed in managed environments and assigned an owner for follow-up. 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. Evidence of this vulnerability is limited, and defenders should verify the affected scope and severity.

Defensive priority

Medium priority due to the potential for unauthorized access and modification of sensitive shipment information.

Recommended defensive actions

• Update the MyParcel plugin to the latest version
• Restrict access to shipment options for users with subscriber-level access
• Monitor for suspicious activity related to shipment modifications
• 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 vulnerability was reported by [email protected] and is documented in the CVE record and NVD detail pages. The MyParcel plugin for WordPress has an authorization bypass vulnerability in all versions up to and including 4.25.1, allowing authenticated attackers with subscriber-level access to view and modify shipment options on any order. Evidence of this vulnerability is limited, and defenders should verify the affected scope and severity. The CVE record was published on 2026-07-11T04:17:26.903Z and has not been modified since then.

Official resources