CVE-2008-6736: Flat Calendar 1.1 does not properly restrict access to administrative functions, which allows remote attack...

Security readout for executives and security teams

Flat Calendar 1.1 could let an outside attacker use administrative event functions if the site owner did not apply the product’s documented security recommendations. The exposed actions are adding and deleting calendar events, so business impact is mainly content integrity and site trust, not confirmed system takeover. Exposure is most likely in legacy Flat Calendar 1.1 installations with administrative PHP files reachable from the public internet and missing the vendor-recommended access restrictions. Treat this as a targeted legacy-web cleanup item. Prioritize if Flat Calendar is internet-facing or used for public communications; otherwise track through normal remediation. Mitigation focus: Check whether Flat Calendar 1.1 is still deployed anywhere.; Apply the product’s documented security recommendations for administrative access.; Restrict administrative PHP files from unauthenticated public access..

Prepared

Jun 28, 2026, 11:04 UTC (UTC+00:00)

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