CVE Alert: CVE-2025-6042 – pebas – Lisfinity Core – Lisfinity Core plugin used for pebas® Lisfinity WordPress theme

Risk verdict

High risk: unauthenticated privilege escalation is possible on the affected plugin, with remote exposure; exploitation is not reported as active, but the potential impact is significant.

Why this matters

Attackers can gain Editor privileges without authentication and may chain with another vulnerability to reach Admin privileges, enabling site manipulation, content impersonation, or backdoor installation. For organisations hosting public WordPress sites with classifieds features, the impact includes defacement, data exposure, and loss of trust.

Most likely attack path

An attacker browses a site that runs the vulnerable plugin and triggers unauthenticated interactions with its API endpoints. Because no user authentication is required and default Editor-like capabilities exist, the attacker can secure elevated privileges; if a separate vulnerability exists to reach Admin, traversal to full compromise is feasible. Preconditions include an internet‑accessible WordPress site with the plugin active and configured to assign Editor by default.

Who is most exposed

Publicly reachable WordPress sites using this plugin, especially those in classifieds or listing ecosystems, with weak access controls or minimal patching. Shared hosting or automated deployments without timely updates heighten exposure.

Detection ideas

• Alerts on unexpected role changes to Editor/Admin from non-admin users
• Unusual API calls or REST endpoint access tied to the plugin
• Creation or modification of user accounts with elevated privileges
• Anomalous content edits or admin actions by non-authenticated or untrusted sources
• Patch/asset inventory showing plugin version older than the patched release

Mitigation and prioritisation

• Apply the latest plugin update (beyond 1.4.0) or remove/disable the plugin if not essential
• Enforce principle of least privilege for all accounts and restrict plugin API access
• Implement web application firewall rules to block unauthenticated privilege-enabling requests
• Audit logs for role changes, admin activity, and new accounts; configure alerts
• Schedule patching during maintenance windows; document change control as a high-priority update
• If exploitation indicators emerge or KEV/EPSS signals rise, treat as priority 1.