CVE-2005-2881: phpCommunityCalendar 4.0.3 allows remote attackers to bypass authentication and gain unauthorized access vi...

Security readout for executives and security teams

phpCommunityCalendar 4.0.3 had an authentication bypass where an unauthenticated remote user could access the admin area directly. If an organization still runs this old calendar application, the concern is unauthorized administrative access to calendar content or settings. Exposure is likely limited to organizations still running phpCommunityCalendar 4.0.3, or possibly prior versions per the Bugtraq title. Internet-facing installations are the main concern. The source bundle provides no CPEs, vendor metadata, or current deployment evidence. Prioritize if the application is still deployed, especially on the public internet. The affected software is very old, so the practical decision is usually replacement, isolation, or retirement rather than extended remediation work. Mitigation focus: Identify and retire any phpCommunityCalendar installations if no vendor-supported fix exists.; Check vendor or maintainer guidance before applying any product-specific patch claim.; Restrict administrative paths to trusted networks or authenticated access controls..

Prepared

Jun 29, 2026, 17:57 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.