CVE-2005-1671: Yahoo Messenger

Low severity, CVSS 2.1. EPSS: 0.4% chance of exploitation in the next 30 days.

The Logfile feature in Yahoo! Messenger 5.x through 6.0 can be activated by a YMSGR: URL and writes all output to a single ypager.log file, even when there are multiple users, and does not properly warn later users that the feature has been enabled, which allows local users to obtain sensitive information from other users.

Affected products

• Yahoo Messenger: version 5.5 only; version 5.6 only; version 5.6.0.1351 only; version 6.0 only

Published 2005-05-19. Last modified 2026-06-16.