CVE-2026-96518 Overview
CVE-2026-96518 is a Missing Authorization vulnerability in the ProfilePress (wp-user-avatar) WordPress plugin by properfraction. The flaw affects all plugin versions up to and including 4.17.3. Attackers can exploit incorrectly configured access control security levels to perform actions that should require elevated privileges. The weakness is categorized under CWE-862: Missing Authorization and is exploitable over the network without authentication, though successful exploitation requires high attack complexity.
Critical Impact
Unauthenticated network attackers can bypass authorization checks in ProfilePress to modify protected data, affecting integrity of WordPress sites running the vulnerable plugin.
Affected Products
- ProfilePress (wp-user-avatar) WordPress plugin by properfraction
- All versions from n/a through 4.17.3
- WordPress sites with ProfilePress user registration and profile features enabled
Discovery Timeline
- 2026-10-09 - CVE-2026-96518 published to NVD
- 2026-10-09 - Last updated in NVD database
Technical Details for CVE-2026-96518
Vulnerability Analysis
The vulnerability resides in the ProfilePress plugin, which provides user registration, login, and profile management functionality for WordPress. The plugin fails to enforce authorization checks on certain operations. An unauthenticated attacker can send network requests that invoke protected functionality without presenting valid credentials or capability checks.
The impact profile shows no confidentiality or availability loss, but a high impact on integrity. This indicates the flaw allows attackers to modify data or state within the application that should be restricted to authorized users. The high attack complexity reflects specific preconditions needed for reliable exploitation.
Root Cause
The root cause is a missing authorization check [CWE-862] in one or more plugin endpoints. ProfilePress does not validate whether the requesting user holds the required capability or role before executing privileged logic. Access control security levels were incorrectly configured, allowing requests that bypass intended permission boundaries. Refer to the Patchstack Vulnerability Advisory for additional technical context.
Attack Vector
Exploitation occurs over the network against a WordPress site running a vulnerable ProfilePress version. The attacker does not need credentials or user interaction. Attackers craft HTTP requests targeting plugin endpoints that lack proper capability validation. Successful requests allow modification of plugin-managed data or configuration without the authorization WordPress would normally require.
No public proof-of-concept exploit is currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. See the Patchstack advisory for disclosure details.
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Stop Identity AttacksDetection Methods for CVE-2026-96518
Indicators of Compromise
- Unexpected modifications to ProfilePress plugin settings, user roles, or user profile data without a corresponding administrative session
- Anomalous POST or GET requests from unauthenticated sources targeting ProfilePress AJAX actions or REST endpoints under /wp-admin/admin-ajax.php or /wp-json/
- New or altered user accounts, avatars, or metadata created outside normal registration workflows
Detection Strategies
- Inventory WordPress installations and identify sites running ProfilePress (wp-user-avatar) at version 4.17.3 or earlier
- Review web server access logs for requests to plugin endpoints lacking a valid authenticated session cookie
- Correlate WordPress audit logs with HTTP request logs to identify authorization bypass patterns
Monitoring Recommendations
- Enable a WordPress audit logging plugin to track role, capability, and profile changes in real time
- Deploy a web application firewall (WAF) rule set that logs and alerts on unauthenticated access to ProfilePress endpoints
- Forward WordPress and web server logs to a centralized SIEM for correlation and retention
How to Mitigate CVE-2026-96518
Immediate Actions Required
- Identify all WordPress sites with ProfilePress installed and confirm the installed version
- Update ProfilePress to a version later than 4.17.3 as soon as a fixed release is published by properfraction
- Restrict administrative and plugin endpoints with IP allow-listing or WAF rules until patching is complete
Patch Information
The vulnerability affects ProfilePress versions through 4.17.3. Monitor the Patchstack Vulnerability Advisory and the vendor plugin page for the fixed release and apply the update across all WordPress environments.
Workarounds
- Deactivate the ProfilePress plugin on affected sites until a patched version is installed
- Apply WAF rules to block unauthenticated requests to ProfilePress AJAX and REST endpoints
- Limit WordPress registration and profile functionality to trusted networks during the exposure window
# Example WP-CLI commands to inventory and disable the plugin
wp plugin list --name=wp-user-avatar --fields=name,status,version
wp plugin deactivate wp-user-avatar
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
