TI-2026-67647 Aliases CVE-2026-104401 GHSA-vjwf-8fv5-9q2x

Sensitive data exposure in Memberful Membership Plugin for WordPress

LOW 19CWE-497Published 2026-10-05 · Updated 2026-10-05

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-497.

Summary

The Memberful - Membership Plugin (memberful-wp) for WordPress is affected in versions through 1.81.2. The plugin exposes sensitive system information to an unauthorized control sphere (CWE-497), which lets it reveal embedded sensitive data. A remote attacker with low privileges can retrieve this data without user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Memberful Memberful - Membership Plugin memberful-wp allows Retrieve Embedded Sensitive Data.This issue affects Memberful - Membership Plugin: from n/a through 1.81.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00215 11th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
memberful	Memberful - Membership Plugin	up to 1.81.2	—	No fix listed	CNA

Memberful - Membership Plugin Vendormemberful Affected up to 1.81.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Memberful - Membership Plugin.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-05 Threatist record created from CVE-2026-104401
2026-10-05 Alias added: GHSA-vjwf-8fv5-9q2x

References

Other 1

https://patchstack.com/database/wordpress/plugin/memberful-wp/vulnerability/wordpress-memberful-membership-plugin-plugin-1-81-2-sensitive-data-exposure-vulnerability?_s_id=cve

TI-2026-65580 WordPress Memberful - Membership Plugin plugin <= 1.81.0 - Cross Site Request Forgery (CSRF) vulnerability CVSS 3.1HIGH 8.0
TI-2024-10463 Memberful <= 1.73.9 - Unauthenticated Content Restriction Bypass to Sensitive Information Exposure CVSS 3.1MEDIUM 5.3
TI-2025-35852 WordPress Memberful plugin <= 1.75.0 - Broken Access Control vulnerability CVSS 3.1MEDIUM 5.3
TI-2024-08578 Memberful – Membership Plugin <= 1.73.7 - Authenticated (contributor+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 6.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences