CVE-2026-88785: CWE-200 Information Exposure in Simple Membership
Description
The Simple Membership WordPress plugin before 4.8.3 does not avoid transmitting a newly registered member's plaintext password in a URL query string when an optional auto-login-after-registration feature is enabled, exposing the credential in browser history and in web server, proxy, and CDN access logs to anyone able to read them.
CVSS v3.1
Score 4.7medium
Affected software
Simple Membership
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-88785 describes an information exposure vulnerability (CWE-200) in the Simple Membership WordPress plugin prior to version 4.8.3. When the optional auto-login-after-registration feature is enabled, the plugin transmits the newly registered user's plaintext password within a URL query string. This insecure practice exposes the password in browser history, web server logs, proxy logs, and CDN logs, making it accessible to anyone with access to these logs or histories.
Potential Impact
Exposing plaintext passwords in URL query strings can lead to credential compromise if attackers or unauthorized parties gain access to browser histories or server/proxy/CDN logs. This may facilitate unauthorized account access or further attacks leveraging the exposed credentials.
Mitigation Recommendations
Upgrade the Simple Membership plugin to version 4.8.3 or later, where this vulnerability has been fixed. Until then, consider disabling the auto-login-after-registration feature to prevent plaintext password exposure in URLs.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-10T07:45:39.142Z
- State
- PUBLISHED
Threat ID: 6acb2de52cdf04f656b78d10
Added to database: 10/11/2026, 06:34:13 UTC
Last enriched: 10/11/2026, 06:49:15 UTC
Last updated: 10/11/2026, 21:33:28 UTC
Views: 17
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