CVE-2026-104401 Memberful CVE debrief

Who should care

Defenders responsible for WordPress deployments using the Memberful - Membership Plugin should assess their exposure and verify inventory to prioritize remediation efforts. Defenders should prioritize verifying the inventory of Memberful - Membership Plugin versions and assessing exposure, as the vulnerability allows retrieval of embedded sensitive data. This vulnerability allows retrieval of embedded sensitive data, which can have operational impacts on

Why it matters

CVE-2026-104401 is a MEDIUM-severity vulnerability in the Memberful - Membership Plugin for WordPress, allowing exposure of sensitive system information. Defenders should prioritize verifying inventory and assessing exposure to mitigate potential risks.

• Verification of Memberful - Membership Plugin versions is required to determine exposure
• Potential retrieval of embedded sensitive data by unauthorized parties
• Defenders should assess the vulnerability's impact on sensitive data retrieval

Technical summary

The Memberful - Membership Plugin for WordPress is vulnerable to exposure of sensitive system information, allowing retrieval of embedded sensitive data. This issue affects versions from n/a through 1.81.2. The vulnerability has a CVSS score of 4.3 and is classified as MEDIUM severity. Defenders should prioritize verifying the inventory of Memberful - Membership Plugin versions and assessing exposure, as the vulnerability allows retrieval of embedded sensitive data. The vulnerability allows exposure of sensitive system information, which can have operational impacts on sensitive data retrieval.

Defensive priority

Defenders should prioritize verifying the inventory of Memberful - Membership Plugin versions and assessing exposure, as the vulnerability allows retrieval of embedded sensitive data.

Recommended defensive actions

• Verify the inventory of Memberful - Membership Plugin versions to identify potential exposure
• Assess the vulnerability's impact on sensitive data retrieval
• Consider compensating controls to mitigate potential risks
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• 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 notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine the extent of the issue and potential impact. The vulnerability allows exposure of sensitive system information, and defenders should verify inventory and assess exposure. The Memberful - Membership Plugin for WordPress is vulnerable to exposure of sensitive system information, allowing retrieval of embedded sensitive data. This issue affects versions from n/a through 1.81.2. Defenders should prioritize

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.